20899681420

素因数分解:

$2^2\times 5^1\times {\mathrm{1044984071}}^1$

素因数の和:1044984080

約数の個数: 12

約数和(自身を含む): 43889331024

約数和(自身を除く): 22989649604

約数列:

[1, 2, 4, 5, 10, 20, 1044984071, 2089968142, 4179936284, 5224920355, 10449840710, 20899681420]

約数ペア:

[(1, 20899681420), (2, 10449840710), (4, 5224920355), (5, 4179936284), (10, 2089968142), (20, 1044984071)]