81158975

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2801}}^1$

素因数の和:2891

約数の個数: 24

約数和(自身を含む): 107708880

約数和(自身を除く): 26549905

約数列:

[1, 5, 19, 25, 61, 95, 305, 475, 1159, 1525, 2801, 5795, 14005, 28975, 53219, 70025, 170861, 266095, 854305, 1330475, 3246359, 4271525, 16231795, 81158975]

約数ペア:

[(1, 81158975), (5, 16231795), (19, 4271525), (25, 3246359), (61, 1330475), (95, 854305), (305, 266095), (475, 170861), (1159, 70025), (1525, 53219), (2801, 28975), (5795, 14005)]