21701425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{809}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 28625400

約数和(自身を除く): 6923975

約数列:

[1, 5, 25, 29, 37, 145, 185, 725, 809, 925, 1073, 4045, 5365, 20225, 23461, 26825, 29933, 117305, 149665, 586525, 748325, 868057, 4340285, 21701425]

約数ペア:

[(1, 21701425), (5, 4340285), (25, 868057), (29, 748325), (37, 586525), (145, 149665), (185, 117305), (725, 29933), (809, 26825), (925, 23461), (1073, 20225), (4045, 5365)]