19580180

素因数分解:

$2^2\times 5^1\times {\mathrm{979009}}^1$

素因数の和:979018

約数の個数: 12

約数和(自身を含む): 41118420

約数和(自身を除く): 21538240

約数列:

[1, 2, 4, 5, 10, 20, 979009, 1958018, 3916036, 4895045, 9790090, 19580180]

約数ペア:

[(1, 19580180), (2, 9790090), (4, 4895045), (5, 3916036), (10, 1958018), (20, 979009)]