77987920

素因数分解:

$2^4\times 5^1\times {\mathrm{974849}}^1$

素因数の和:974862

約数の個数: 20

約数和(自身を含む): 181322100

約数和(自身を除く): 103334180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 974849, 1949698, 3899396, 4874245, 7798792, 9748490, 15597584, 19496980, 38993960, 77987920]

約数ペア:

[(1, 77987920), (2, 38993960), (4, 19496980), (5, 15597584), (8, 9748490), (10, 7798792), (16, 4874245), (20, 3899396), (40, 1949698), (80, 974849)]