15820180

素因数分解:

$2^2\times 5^1\times {\mathrm{791009}}^1$

素因数の和:791018

約数の個数: 12

約数和(自身を含む): 33222420

約数和(自身を除く): 17402240

約数列:

[1, 2, 4, 5, 10, 20, 791009, 1582018, 3164036, 3955045, 7910090, 15820180]

約数ペア:

[(1, 15820180), (2, 7910090), (4, 3955045), (5, 3164036), (10, 1582018), (20, 791009)]