20180225

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2003}}^1$

素因数の和:2057

約数の個数: 24

約数和(自身を含む): 27831552

約数和(自身を除く): 7651327

約数列:

[1, 5, 13, 25, 31, 65, 155, 325, 403, 775, 2003, 2015, 10015, 10075, 26039, 50075, 62093, 130195, 310465, 650975, 807209, 1552325, 4036045, 20180225]

約数ペア:

[(1, 20180225), (5, 4036045), (13, 1552325), (25, 807209), (31, 650975), (65, 310465), (155, 130195), (325, 62093), (403, 50075), (775, 26039), (2003, 10075), (2015, 10015)]