20508780580

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{269}}^1\times {\mathrm{21061}}^1$

素因数の和:21520

約数の個数: 48

約数和(自身を含む): 43469440560

約数和(自身を除く): 22960659980

約数列:

[1, 2, 4, 5, 10, 20, 181, 269, 362, 538, 724, 905, 1076, 1345, 1810, 2690, 3620, 5380, 21061, 42122, 48689, 84244, 97378, 105305, 194756, 210610, 243445, 421220, 486890, 973780, 3812041, 5665409, 7624082, 11330818, 15248164, 19060205, 22661636, 28327045, 38120410, 56654090, 76240820, 113308180, 1025439029, 2050878058, 4101756116, 5127195145, 10254390290, 20508780580]

約数ペア:

[(1, 20508780580), (2, 10254390290), (4, 5127195145), (5, 4101756116), (10, 2050878058), (20, 1025439029), (181, 113308180), (269, 76240820), (362, 56654090), (538, 38120410), (724, 28327045), (905, 22661636), (1076, 19060205), (1345, 15248164), (1810, 11330818), (2690, 7624082), (3620, 5665409), (5380, 3812041), (21061, 973780), (42122, 486890), (48689, 421220), (84244, 243445), (97378, 210610), (105305, 194756)]