20591425

素因数分解:

$5^2\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 26589816

約数和(自身を除く): 5998391

約数列:

[1, 5, 25, 37, 113, 185, 197, 565, 925, 985, 2825, 4181, 4925, 7289, 20905, 22261, 36445, 104525, 111305, 182225, 556525, 823657, 4118285, 20591425]

約数ペア:

[(1, 20591425), (5, 4118285), (25, 823657), (37, 556525), (113, 182225), (185, 111305), (197, 104525), (565, 36445), (925, 22261), (985, 20905), (2825, 7289), (4181, 4925)]