90518180

素因数分解:

$2^2\times 5^1\times {\mathrm{4525909}}^1$

素因数の和:4525918

約数の個数: 12

約数和(自身を含む): 190088220

約数和(自身を除く): 99570040

約数列:

[1, 2, 4, 5, 10, 20, 4525909, 9051818, 18103636, 22629545, 45259090, 90518180]

約数ペア:

[(1, 90518180), (2, 45259090), (4, 22629545), (5, 18103636), (10, 9051818), (20, 4525909)]