25920220

素因数分解:

$2^2\times 5^1\times {\mathrm{1296011}}^1$

素因数の和:1296020

約数の個数: 12

約数和(自身を含む): 54432504

約数和(自身を除く): 28512284

約数列:

[1, 2, 4, 5, 10, 20, 1296011, 2592022, 5184044, 6480055, 12960110, 25920220]

約数ペア:

[(1, 25920220), (2, 12960110), (4, 6480055), (5, 5184044), (10, 2592022), (20, 1296011)]