20512990

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{5167}}^1$

素因数の和:5571

約数の個数: 16

約数和(自身を含む): 37023552

約数和(自身を除く): 16510562

約数列:

[1, 2, 5, 10, 397, 794, 1985, 3970, 5167, 10334, 25835, 51670, 2051299, 4102598, 10256495, 20512990]

約数ペア:

[(1, 20512990), (2, 10256495), (5, 4102598), (10, 2051299), (397, 51670), (794, 25835), (1985, 10334), (3970, 5167)]