20156440

素因数分解:

$2^3\times 5^1\times {\mathrm{503911}}^1$

素因数の和:503922

約数の個数: 16

約数和(自身を含む): 45352080

約数和(自身を除く): 25195640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 503911, 1007822, 2015644, 2519555, 4031288, 5039110, 10078220, 20156440]

約数ペア:

[(1, 20156440), (2, 10078220), (4, 5039110), (5, 4031288), (8, 2519555), (10, 2015644), (20, 1007822), (40, 503911)]