20210872720

素因数分解:

$2^4\times 5^1\times {\mathrm{252635909}}^1$

素因数の和:252635922

約数の個数: 20

約数和(自身を含む): 46990279260

約数和(自身を除く): 26779406540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 252635909, 505271818, 1010543636, 1263179545, 2021087272, 2526359090, 4042174544, 5052718180, 10105436360, 20210872720]

約数ペア:

[(1, 20210872720), (2, 10105436360), (4, 5052718180), (5, 4042174544), (8, 2526359090), (10, 2021087272), (16, 1263179545), (20, 1010543636), (40, 505271818), (80, 252635909)]