18728020

素因数分解:

$2^2\times 5^1\times {\mathrm{936401}}^1$

素因数の和:936410

約数の個数: 12

約数和(自身を含む): 39328884

約数和(自身を除く): 20600864

約数列:

[1, 2, 4, 5, 10, 20, 936401, 1872802, 3745604, 4682005, 9364010, 18728020]

約数ペア:

[(1, 18728020), (2, 9364010), (4, 4682005), (5, 3745604), (10, 1872802), (20, 936401)]