129291025

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{569}}^1$

素因数の和:789

約数の個数: 24

約数和(自身を含む): 164331000

約数和(自身を除く): 35039975

約数列:

[1, 5, 25, 61, 149, 305, 569, 745, 1525, 2845, 3725, 9089, 14225, 34709, 45445, 84781, 173545, 227225, 423905, 867725, 2119525, 5171641, 25858205, 129291025]

約数ペア:

[(1, 129291025), (5, 25858205), (25, 5171641), (61, 2119525), (149, 867725), (305, 423905), (569, 227225), (745, 173545), (1525, 84781), (2845, 45445), (3725, 34709), (9089, 14225)]