20665025

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{20161}}^1$

素因数の和:20212

約数の個数: 12

約数和(自身を含む): 26250924

約数和(自身を除く): 5585899

約数列:

[1, 5, 25, 41, 205, 1025, 20161, 100805, 504025, 826601, 4133005, 20665025]

約数ペア:

[(1, 20665025), (5, 4133005), (25, 826601), (41, 504025), (205, 100805), (1025, 20161)]