18881036180

素因数分解:

$2^2\times 5^1\times {\mathrm{944051809}}^1$

素因数の和:944051818

約数の個数: 12

約数和(自身を含む): 39650176020

約数和(自身を除く): 20769139840

約数列:

[1, 2, 4, 5, 10, 20, 944051809, 1888103618, 3776207236, 4720259045, 9440518090, 18881036180]

約数ペア:

[(1, 18881036180), (2, 9440518090), (4, 4720259045), (5, 3776207236), (10, 1888103618), (20, 944051809)]