64657640

素因数分解:

$2^3\times 5^1\times {\mathrm{607}}^1\times {\mathrm{2663}}^1$

素因数の和:3281

約数の個数: 32

約数和(自身を含む): 145774080

約数和(自身を除く): 81116440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 607, 1214, 2428, 2663, 3035, 4856, 5326, 6070, 10652, 12140, 13315, 21304, 24280, 26630, 53260, 106520, 1616441, 3232882, 6465764, 8082205, 12931528, 16164410, 32328820, 64657640]

約数ペア:

[(1, 64657640), (2, 32328820), (4, 16164410), (5, 12931528), (8, 8082205), (10, 6465764), (20, 3232882), (40, 1616441), (607, 106520), (1214, 53260), (2428, 26630), (2663, 24280), (3035, 21304), (4856, 13315), (5326, 12140), (6070, 10652)]