78640025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{3499}}^1$

素因数の和:3569

約数の個数: 24

約数和(自身を含む): 104160000

約数和(自身を除く): 25519975

約数列:

[1, 5, 25, 29, 31, 145, 155, 725, 775, 899, 3499, 4495, 17495, 22475, 87475, 101471, 108469, 507355, 542345, 2536775, 2711725, 3145601, 15728005, 78640025]

約数ペア:

[(1, 78640025), (5, 15728005), (25, 3145601), (29, 2711725), (31, 2536775), (145, 542345), (155, 507355), (725, 108469), (775, 101471), (899, 87475), (3499, 22475), (4495, 17495)]