18191585

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{199}}^1\times {\mathrm{389}}^1$

素因数の和:640

約数の個数: 16

約数和(自身を含む): 22464000

約数和(自身を除く): 4272415

約数列:

[1, 5, 47, 199, 235, 389, 995, 1945, 9353, 18283, 46765, 77411, 91415, 387055, 3638317, 18191585]

約数ペア:

[(1, 18191585), (5, 3638317), (47, 387055), (199, 91415), (235, 77411), (389, 46765), (995, 18283), (1945, 9353)]