32003990

素因数分解:

$2^1\times 5^1\times {\mathrm{1601}}^1\times {\mathrm{1999}}^1$

素因数の和:3607

約数の個数: 16

約数和(自身を含む): 57672000

約数和(自身を除く): 25668010

約数列:

[1, 2, 5, 10, 1601, 1999, 3202, 3998, 8005, 9995, 16010, 19990, 3200399, 6400798, 16001995, 32003990]

約数ペア:

[(1, 32003990), (2, 16001995), (5, 6400798), (10, 3200399), (1601, 19990), (1999, 16010), (3202, 9995), (3998, 8005)]