20505836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2837}}^1$

素因数の和:2993

約数の個数: 24

約数和(自身を含む): 38937360

約数和(自身を除く): 18431524

約数列:

[1, 2, 4, 13, 26, 52, 139, 278, 556, 1807, 2837, 3614, 5674, 7228, 11348, 36881, 73762, 147524, 394343, 788686, 1577372, 5126459, 10252918, 20505836]

約数ペア:

[(1, 20505836), (2, 10252918), (4, 5126459), (13, 1577372), (26, 788686), (52, 394343), (139, 147524), (278, 73762), (556, 36881), (1807, 11348), (2837, 7228), (3614, 5674)]