8722180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4001}}^1$

素因数の和:4119

約数の個数: 24

約数和(自身を含む): 18489240

約数和(自身を除く): 9767060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 4001, 8002, 16004, 20005, 40010, 80020, 436109, 872218, 1744436, 2180545, 4361090, 8722180]

約数ペア:

[(1, 8722180), (2, 4361090), (4, 2180545), (5, 1744436), (10, 872218), (20, 436109), (109, 80020), (218, 40010), (436, 20005), (545, 16004), (1090, 8002), (2180, 4001)]