Datrys 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51

$$1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Enrhifo

$$1326$$

Camau Ateb

Adio 1 a 2 i gael 3.

$$3+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 3 a 3 i gael 6.

$$6+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 6 a 4 i gael 10.

$$10+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 10 a 5 i gael 15.

$$15+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 15 a 6 i gael 21.

$$21+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 21 a 7 i gael 28.

$$28+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 28 a 8 i gael 36.

$$36+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 36 a 9 i gael 45.

$$45+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 45 a 10 i gael 55.

$$55+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 55 a 11 i gael 66.

$$66+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 66 a 12 i gael 78.

$$78+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 78 a 13 i gael 91.

$$91+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 91 a 14 i gael 105.

$$105+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 105 a 15 i gael 120.

$$120+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 120 a 16 i gael 136.

$$136+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 136 a 17 i gael 153.

$$153+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 153 a 18 i gael 171.

$$171+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 171 a 19 i gael 190.

$$190+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 190 a 20 i gael 210.

$$210+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 210 a 21 i gael 231.

$$231+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 231 a 22 i gael 253.

$$253+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 253 a 23 i gael 276.

$$276+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 276 a 24 i gael 300.

$$300+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 300 a 25 i gael 325.

$$325+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 325 a 26 i gael 351.

$$351+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 351 a 27 i gael 378.

$$378+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 378 a 28 i gael 406.

$$406+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 406 a 29 i gael 435.

$$435+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 435 a 30 i gael 465.

$$465+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 465 a 31 i gael 496.

$$496+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 496 a 32 i gael 528.

$$528+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 528 a 33 i gael 561.

$$561+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 561 a 34 i gael 595.

$$595+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 595 a 35 i gael 630.

$$630+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 630 a 36 i gael 666.

$$666+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 666 a 37 i gael 703.

$$703+38+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 703 a 38 i gael 741.

$$741+39+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 741 a 39 i gael 780.

$$780+40+41+42+43+44+45+46+47+48+49+50+51$$

Adio 780 a 40 i gael 820.

$$820+41+42+43+44+45+46+47+48+49+50+51$$

Adio 820 a 41 i gael 861.

$$861+42+43+44+45+46+47+48+49+50+51$$

Adio 861 a 42 i gael 903.

$$903+43+44+45+46+47+48+49+50+51$$

Adio 903 a 43 i gael 946.

$$946+44+45+46+47+48+49+50+51$$

Adio 946 a 44 i gael 990.

$$990+45+46+47+48+49+50+51$$

Adio 990 a 45 i gael 1035.

$$1035+46+47+48+49+50+51$$

Adio 1035 a 46 i gael 1081.

$$1081+47+48+49+50+51$$

Adio 1081 a 47 i gael 1128.

$$1128+48+49+50+51$$

Adio 1128 a 48 i gael 1176.

$$1176+49+50+51$$

Adio 1176 a 49 i gael 1225.

$$1225+50+51$$

Adio 1225 a 50 i gael 1275.

$$1275+51$$

Adio 1275 a 51 i gael 1326.

$$1326$$

Ffactor

$$2\times 3\times 13\times 17$$