20915525

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1697}}^1$

素因数の和:1753

約数の個数: 24

約数和(自身を含む): 28424520

約数和(自身を除く): 7508995

約数列:

[1, 5, 17, 25, 29, 85, 145, 425, 493, 725, 1697, 2465, 8485, 12325, 28849, 42425, 49213, 144245, 246065, 721225, 836621, 1230325, 4183105, 20915525]

約数ペア:

[(1, 20915525), (5, 4183105), (17, 1230325), (25, 836621), (29, 721225), (85, 246065), (145, 144245), (425, 49213), (493, 42425), (725, 28849), (1697, 12325), (2465, 8485)]