21000657652

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{2905459}}^1$

素因数の和:2905615

約数の個数: 24

約数和(自身を含む): 39862911200

約数和(自身を除く): 18862253548

約数列:

[1, 2, 4, 13, 26, 52, 139, 278, 556, 1807, 3614, 7228, 2905459, 5810918, 11621836, 37770967, 75541934, 151083868, 403858801, 807717602, 1615435204, 5250164413, 10500328826, 21000657652]

約数ペア:

[(1, 21000657652), (2, 10500328826), (4, 5250164413), (13, 1615435204), (26, 807717602), (52, 403858801), (139, 151083868), (278, 75541934), (556, 37770967), (1807, 11621836), (3614, 5810918), (7228, 2905459)]