15918220

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1621}}^1$

素因数の和:2121

約数の個数: 24

約数和(自身を含む): 33517008

約数和(自身を除く): 17598788

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1621, 1964, 2455, 3242, 4910, 6484, 8105, 9820, 16210, 32420, 795911, 1591822, 3183644, 3979555, 7959110, 15918220]

約数ペア:

[(1, 15918220), (2, 7959110), (4, 3979555), (5, 3183644), (10, 1591822), (20, 795911), (491, 32420), (982, 16210), (1621, 9820), (1964, 8105), (2455, 6484), (3242, 4910)]