39981740

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3109}}^1$

素因数の和:3761

約数の個数: 24

約数和(自身を含む): 84119280

約数和(自身を除く): 44137540

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3109, 3215, 6218, 6430, 12436, 12860, 15545, 31090, 62180, 1999087, 3998174, 7996348, 9995435, 19990870, 39981740]

約数ペア:

[(1, 39981740), (2, 19990870), (4, 9995435), (5, 7996348), (10, 3998174), (20, 1999087), (643, 62180), (1286, 31090), (2572, 15545), (3109, 12860), (3215, 12436), (6218, 6430)]