20545945

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{4933}}^1$

素因数の和:4969

約数の個数: 24

約数和(自身を含む): 30373704

約数和(自身を除く): 9827759

約数列:

[1, 5, 7, 17, 35, 49, 85, 119, 245, 595, 833, 4165, 4933, 24665, 34531, 83861, 172655, 241717, 419305, 587027, 1208585, 2935135, 4109189, 20545945]

約数ペア:

[(1, 20545945), (5, 4109189), (7, 2935135), (17, 1208585), (35, 587027), (49, 419305), (85, 241717), (119, 172655), (245, 83861), (595, 34531), (833, 24665), (4165, 4933)]