18720772

素因数分解:

$2^2\times 7^1\times {\mathrm{668599}}^1$

素因数の和:668610

約数の個数: 12

約数和(自身を含む): 37441600

約数和(自身を除く): 18720828

約数列:

[1, 2, 4, 7, 14, 28, 668599, 1337198, 2674396, 4680193, 9360386, 18720772]

約数ペア:

[(1, 18720772), (2, 9360386), (4, 4680193), (7, 2674396), (14, 1337198), (28, 668599)]