20816440

素因数分解:

$2^3\times 5^1\times {\mathrm{520411}}^1$

素因数の和:520422

約数の個数: 16

約数和(自身を含む): 46837080

約数和(自身を除く): 26020640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 520411, 1040822, 2081644, 2602055, 4163288, 5204110, 10408220, 20816440]

約数ペア:

[(1, 20816440), (2, 10408220), (4, 5204110), (5, 4163288), (8, 2602055), (10, 2081644), (20, 1040822), (40, 520411)]