12985745

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:656

約数の個数: 16

約数和(自身を含む): 16204800

約数和(自身を除く): 3219055

約数列:

[1, 5, 31, 155, 199, 421, 995, 2105, 6169, 13051, 30845, 65255, 83779, 418895, 2597149, 12985745]

約数ペア:

[(1, 12985745), (5, 2597149), (31, 418895), (155, 83779), (199, 65255), (421, 30845), (995, 13051), (2105, 6169)]