20966309

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{479}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 26703360

約数和(自身を除く): 5737051

約数列:

[1, 7, 13, 37, 91, 169, 259, 479, 481, 1183, 3353, 3367, 6227, 6253, 17723, 43589, 43771, 80951, 124061, 230399, 566657, 1612793, 2995187, 20966309]

約数ペア:

[(1, 20966309), (7, 2995187), (13, 1612793), (37, 566657), (91, 230399), (169, 124061), (259, 80951), (479, 43771), (481, 43589), (1183, 17723), (3353, 6253), (3367, 6227)]