20989228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{2417}}^1$

素因数の和:2601

約数の個数: 24

約数和(自身を含む): 39809952

約数和(自身を除く): 18820724

約数列:

[1, 2, 4, 13, 26, 52, 167, 334, 668, 2171, 2417, 4342, 4834, 8684, 9668, 31421, 62842, 125684, 403639, 807278, 1614556, 5247307, 10494614, 20989228]

約数ペア:

[(1, 20989228), (2, 10494614), (4, 5247307), (13, 1614556), (26, 807278), (52, 403639), (167, 125684), (334, 62842), (668, 31421), (2171, 9668), (2417, 8684), (4342, 4834)]