20415088

素因数分解:

$2^4\times {\mathrm{499}}^1\times {\mathrm{2557}}^1$

素因数の和:3064

約数の個数: 20

約数和(自身を含む): 39649000

約数和(自身を除く): 19233912

約数列:

[1, 2, 4, 8, 16, 499, 998, 1996, 2557, 3992, 5114, 7984, 10228, 20456, 40912, 1275943, 2551886, 5103772, 10207544, 20415088]

約数ペア:

[(1, 20415088), (2, 10207544), (4, 5103772), (8, 2551886), (16, 1275943), (499, 40912), (998, 20456), (1996, 10228), (2557, 7984), (3992, 5114)]