520040

素因数分解:

$2^3\times 5^1\times {\mathrm{13001}}^1$

素因数の和:13012

約数の個数: 16

約数和(自身を含む): 1170180

約数和(自身を除く): 650140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 13001, 26002, 52004, 65005, 104008, 130010, 260020, 520040]

約数ペア:

[(1, 520040), (2, 260020), (4, 130010), (5, 104008), (8, 65005), (10, 52004), (20, 26002), (40, 13001)]