20603375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:468

約数の個数: 32

約数和(自身を含む): 28654080

約数和(自身を除く): 8050705

約数列:

[1, 5, 13, 25, 31, 65, 125, 155, 325, 403, 409, 775, 1625, 2015, 2045, 3875, 5317, 10075, 10225, 12679, 26585, 50375, 51125, 63395, 132925, 164827, 316975, 664625, 824135, 1584875, 4120675, 20603375]

約数ペア:

[(1, 20603375), (5, 4120675), (13, 1584875), (25, 824135), (31, 664625), (65, 316975), (125, 164827), (155, 132925), (325, 63395), (403, 51125), (409, 50375), (775, 26585), (1625, 12679), (2015, 10225), (2045, 10075), (3875, 5317)]