19760080

素因数分解:

$2^4\times 5^1\times {\mathrm{247001}}^1$

素因数の和:247014

約数の個数: 20

約数和(自身を含む): 45942372

約数和(自身を除く): 26182292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 247001, 494002, 988004, 1235005, 1976008, 2470010, 3952016, 4940020, 9880040, 19760080]

約数ペア:

[(1, 19760080), (2, 9880040), (4, 4940020), (5, 3952016), (8, 2470010), (10, 1976008), (16, 1235005), (20, 988004), (40, 494002), (80, 247001)]