20520040

素因数分解:

$2^3\times 5^1\times {\mathrm{513001}}^1$

素因数の和:513012

約数の個数: 16

約数和(自身を含む): 46170180

約数和(自身を除く): 25650140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 513001, 1026002, 2052004, 2565005, 4104008, 5130010, 10260020, 20520040]

約数ペア:

[(1, 20520040), (2, 10260020), (4, 5130010), (5, 4104008), (8, 2565005), (10, 2052004), (20, 1026002), (40, 513001)]