19390180

素因数分解:

$2^2\times 5^1\times {\mathrm{969509}}^1$

素因数の和:969518

約数の個数: 12

約数和(自身を含む): 40719420

約数和(自身を除く): 21329240

約数列:

[1, 2, 4, 5, 10, 20, 969509, 1939018, 3878036, 4847545, 9695090, 19390180]

約数ペア:

[(1, 19390180), (2, 9695090), (4, 4847545), (5, 3878036), (10, 1939018), (20, 969509)]