20406760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2441}}^1$

素因数の和:2482

約数の個数: 64

約数和(自身を含む): 52747200

約数和(自身を除く): 32340440

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2441, 4180, 4882, 8360, 9764, 12205, 19528, 24410, 26851, 46379, 48820, 53702, 92758, 97640, 107404, 134255, 185516, 214808, 231895, 268510, 371032, 463790, 510169, 537020, 927580, 1020338, 1074040, 1855160, 2040676, 2550845, 4081352, 5101690, 10203380, 20406760]

約数ペア:

[(1, 20406760), (2, 10203380), (4, 5101690), (5, 4081352), (8, 2550845), (10, 2040676), (11, 1855160), (19, 1074040), (20, 1020338), (22, 927580), (38, 537020), (40, 510169), (44, 463790), (55, 371032), (76, 268510), (88, 231895), (95, 214808), (110, 185516), (152, 134255), (190, 107404), (209, 97640), (220, 92758), (380, 53702), (418, 48820), (440, 46379), (760, 26851), (836, 24410), (1045, 19528), (1672, 12205), (2090, 9764), (2441, 8360), (4180, 4882)]