20028650

素因数分解:

$2^1\times 5^2\times {\mathrm{397}}^1\times {\mathrm{1009}}^1$

素因数の和:1418

約数の個数: 24

約数和(自身を含む): 37384140

約数和(自身を除く): 17355490

約数列:

[1, 2, 5, 10, 25, 50, 397, 794, 1009, 1985, 2018, 3970, 5045, 9925, 10090, 19850, 25225, 50450, 400573, 801146, 2002865, 4005730, 10014325, 20028650]

約数ペア:

[(1, 20028650), (2, 10014325), (5, 4005730), (10, 2002865), (25, 801146), (50, 400573), (397, 50450), (794, 25225), (1009, 19850), (1985, 10090), (2018, 9925), (3970, 5045)]