31891640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72481}}^1$

素因数の和:72503

約数の個数: 32

約数和(自身を含む): 78280560

約数和(自身を除く): 46388920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 72481, 144962, 289924, 362405, 579848, 724810, 797291, 1449620, 1594582, 2899240, 3189164, 3986455, 6378328, 7972910, 15945820, 31891640]

約数ペア:

[(1, 31891640), (2, 15945820), (4, 7972910), (5, 6378328), (8, 3986455), (10, 3189164), (11, 2899240), (20, 1594582), (22, 1449620), (40, 797291), (44, 724810), (55, 579848), (88, 362405), (110, 289924), (220, 144962), (440, 72481)]