39620180

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1999}}^1$

素因数の和:2999

約数の個数: 24

約数和(自身を含む): 83328000

約数和(自身を除く): 43707820

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 1999, 3964, 3998, 4955, 7996, 9910, 9995, 19820, 19990, 39980, 1981009, 3962018, 7924036, 9905045, 19810090, 39620180]

約数ペア:

[(1, 39620180), (2, 19810090), (4, 9905045), (5, 7924036), (10, 3962018), (20, 1981009), (991, 39980), (1982, 19990), (1999, 19820), (3964, 9995), (3998, 9910), (4955, 7996)]