19920080

素因数分解:

$2^4\times 5^1\times {\mathrm{499}}^2$

素因数の和:1011

約数の個数: 30

約数和(自身を含む): 46407186

約数和(自身を除く): 26487106

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 499, 998, 1996, 2495, 3992, 4990, 7984, 9980, 19960, 39920, 249001, 498002, 996004, 1245005, 1992008, 2490010, 3984016, 4980020, 9960040, 19920080]

約数ペア:

[(1, 19920080), (2, 9960040), (4, 4980020), (5, 3984016), (8, 2490010), (10, 1992008), (16, 1245005), (20, 996004), (40, 498002), (80, 249001), (499, 39920), (998, 19960), (1996, 9980), (2495, 7984), (3992, 4990)]