2021427280

素因数分解:

$2^4\times 5^1\times {\mathrm{25267841}}^1$

素因数の和:25267854

約数の個数: 20

約数和(自身を含む): 4699818612

約数和(自身を除く): 2678391332

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25267841, 50535682, 101071364, 126339205, 202142728, 252678410, 404285456, 505356820, 1010713640, 2021427280]

約数ペア:

[(1, 2021427280), (2, 1010713640), (4, 505356820), (5, 404285456), (8, 252678410), (10, 202142728), (16, 126339205), (20, 101071364), (40, 50535682), (80, 25267841)]