20646890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{187699}}^1$

素因数の和:187717

約数の個数: 16

約数和(自身を含む): 40543200

約数和(自身を除く): 19896310

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 187699, 375398, 938495, 1876990, 2064689, 4129378, 10323445, 20646890]

約数ペア:

[(1, 20646890), (2, 10323445), (5, 4129378), (10, 2064689), (11, 1876990), (22, 938495), (55, 375398), (110, 187699)]