18906025

素因数分解:

$5^2\times {\mathrm{43}}^2\times {\mathrm{409}}^1$

素因数の和:505

約数の個数: 18

約数和(自身を含む): 24060030

約数和(自身を除く): 5154005

約数列:

[1, 5, 25, 43, 215, 409, 1075, 1849, 2045, 9245, 10225, 17587, 46225, 87935, 439675, 756241, 3781205, 18906025]

約数ペア:

[(1, 18906025), (5, 3781205), (25, 756241), (43, 439675), (215, 87935), (409, 46225), (1075, 17587), (1849, 10225), (2045, 9245)]