20403889640

素因数分解:

$2^3\times 5^1\times {\mathrm{510097241}}^1$

素因数の和:510097252

約数の個数: 16

約数和(自身を含む): 45908751780

約数和(自身を除く): 25504862140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510097241, 1020194482, 2040388964, 2550486205, 4080777928, 5100972410, 10201944820, 20403889640]

約数ペア:

[(1, 20403889640), (2, 10201944820), (4, 5100972410), (5, 4080777928), (8, 2550486205), (10, 2040388964), (20, 1020194482), (40, 510097241)]