85378180

素因数分解:

$2^2\times 5^1\times {\mathrm{4268909}}^1$

素因数の和:4268918

約数の個数: 12

約数和(自身を含む): 179294220

約数和(自身を除く): 93916040

約数列:

[1, 2, 4, 5, 10, 20, 4268909, 8537818, 17075636, 21344545, 42689090, 85378180]

約数ペア:

[(1, 85378180), (2, 42689090), (4, 21344545), (5, 17075636), (10, 8537818), (20, 4268909)]