81457475

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2131}}^1$

素因数の和:2291

約数の個数: 24

約数和(自身を含む): 111034560

約数和(自身を除く): 29577085

約数列:

[1, 5, 11, 25, 55, 139, 275, 695, 1529, 2131, 3475, 7645, 10655, 23441, 38225, 53275, 117205, 296209, 586025, 1481045, 3258299, 7405225, 16291495, 81457475]

約数ペア:

[(1, 81457475), (5, 16291495), (11, 7405225), (25, 3258299), (55, 1481045), (139, 586025), (275, 296209), (695, 117205), (1529, 53275), (2131, 38225), (3475, 23441), (7645, 10655)]