18510020

素因数分解:

$2^2\times 5^1\times {\mathrm{925501}}^1$

素因数の和:925510

約数の個数: 12

約数和(自身を含む): 38871084

約数和(自身を除く): 20361064

約数列:

[1, 2, 4, 5, 10, 20, 925501, 1851002, 3702004, 4627505, 9255010, 18510020]

約数ペア:

[(1, 18510020), (2, 9255010), (4, 4627505), (5, 3702004), (10, 1851002), (20, 925501)]