129760040

素因数分解:

$2^3\times 5^1\times {\mathrm{3244001}}^1$

素因数の和:3244012

約数の個数: 16

約数和(自身を含む): 291960180

約数和(自身を除く): 162200140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3244001, 6488002, 12976004, 16220005, 25952008, 32440010, 64880020, 129760040]

約数ペア:

[(1, 129760040), (2, 64880020), (4, 32440010), (5, 25952008), (8, 16220005), (10, 12976004), (20, 6488002), (40, 3244001)]