19764040

素因数分解:

$2^3\times 5^1\times {\mathrm{494101}}^1$

素因数の和:494112

約数の個数: 16

約数和(自身を含む): 44469180

約数和(自身を除く): 24705140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 494101, 988202, 1976404, 2470505, 3952808, 4941010, 9882020, 19764040]

約数ペア:

[(1, 19764040), (2, 9882020), (4, 4941010), (5, 3952808), (8, 2470505), (10, 1976404), (20, 988202), (40, 494101)]