81299525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{821}}^1$

素因数の和:1081

約数の個数: 24

約数和(自身を含む): 107330184

約数和(自身を除く): 26030659

約数列:

[1, 5, 17, 25, 85, 233, 425, 821, 1165, 3961, 4105, 5825, 13957, 19805, 20525, 69785, 99025, 191293, 348925, 956465, 3251981, 4782325, 16259905, 81299525]

約数ペア:

[(1, 81299525), (5, 16259905), (17, 4782325), (25, 3251981), (85, 956465), (233, 348925), (425, 191293), (821, 99025), (1165, 69785), (3961, 20525), (4105, 19805), (5825, 13957)]