18972020

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{20183}}^1$

素因数の和:20239

約数の個数: 24

約数和(自身を含む): 40690944

約数和(自身を除く): 21718924

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 20183, 40366, 80732, 100915, 201830, 403660, 948601, 1897202, 3794404, 4743005, 9486010, 18972020]

約数ペア:

[(1, 18972020), (2, 9486010), (4, 4743005), (5, 3794404), (10, 1897202), (20, 948601), (47, 403660), (94, 201830), (188, 100915), (235, 80732), (470, 40366), (940, 20183)]