18406505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{1423}}^1$

素因数の和:1640

約数の個数: 16

約数和(自身を含む): 23923200

約数和(自身を除く): 5516695

約数列:

[1, 5, 13, 65, 199, 995, 1423, 2587, 7115, 12935, 18499, 92495, 283177, 1415885, 3681301, 18406505]

約数ペア:

[(1, 18406505), (5, 3681301), (13, 1415885), (65, 283177), (199, 92495), (995, 18499), (1423, 12935), (2587, 7115)]