25920380

素因数分解:

$2^2\times 5^1\times {\mathrm{1296019}}^1$

素因数の和:1296028

約数の個数: 12

約数和(自身を含む): 54432840

約数和(自身を除く): 28512460

約数列:

[1, 2, 4, 5, 10, 20, 1296019, 2592038, 5184076, 6480095, 12960190, 25920380]

約数ペア:

[(1, 25920380), (2, 12960190), (4, 6480095), (5, 5184076), (10, 2592038), (20, 1296019)]