18820180

素因数分解:

$2^2\times 5^1\times {\mathrm{941009}}^1$

素因数の和:941018

約数の個数: 12

約数和(自身を含む): 39522420

約数和(自身を除く): 20702240

約数列:

[1, 2, 4, 5, 10, 20, 941009, 1882018, 3764036, 4705045, 9410090, 18820180]

約数ペア:

[(1, 18820180), (2, 9410090), (4, 4705045), (5, 3764036), (10, 1882018), (20, 941009)]