80080040

素因数分解:

$2^3\times 5^1\times {\mathrm{2002001}}^1$

素因数の和:2002012

約数の個数: 16

約数和(自身を含む): 180180180

約数和(自身を除く): 100100140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2002001, 4004002, 8008004, 10010005, 16016008, 20020010, 40040020, 80080040]

約数ペア:

[(1, 80080040), (2, 40040020), (4, 20020010), (5, 16016008), (8, 10010005), (10, 8008004), (20, 4004002), (40, 2002001)]