18328895

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:339

約数の個数: 24

約数和(自身を含む): 24156000

約数和(自身を除く): 5827105

約数列:

[1, 5, 13, 65, 109, 169, 199, 545, 845, 995, 1417, 2587, 7085, 12935, 18421, 21691, 33631, 92105, 108455, 168155, 281983, 1409915, 3665779, 18328895]

約数ペア:

[(1, 18328895), (5, 3665779), (13, 1409915), (65, 281983), (109, 168155), (169, 108455), (199, 92105), (545, 33631), (845, 21691), (995, 18421), (1417, 12935), (2587, 7085)]