19099820

素因数分解:

$2^2\times 5^1\times {\mathrm{954991}}^1$

素因数の和:955000

約数の個数: 12

約数和(自身を含む): 40109664

約数和(自身を除く): 21009844

約数列:

[1, 2, 4, 5, 10, 20, 954991, 1909982, 3819964, 4774955, 9549910, 19099820]

約数ペア:

[(1, 19099820), (2, 9549910), (4, 4774955), (5, 3819964), (10, 1909982), (20, 954991)]