20809525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2441}}^1$

素因数の和:2493

約数の個数: 24

約数和(自身を含む): 29069568

約数和(自身を除く): 8260043

約数列:

[1, 5, 11, 25, 31, 55, 155, 275, 341, 775, 1705, 2441, 8525, 12205, 26851, 61025, 75671, 134255, 378355, 671275, 832381, 1891775, 4161905, 20809525]

約数ペア:

[(1, 20809525), (5, 4161905), (11, 1891775), (25, 832381), (31, 671275), (55, 378355), (155, 134255), (275, 75671), (341, 61025), (775, 26851), (1705, 12205), (2441, 8525)]