19884440

素因数分解:

$2^3\times 5^1\times {\mathrm{497111}}^1$

素因数の和:497122

約数の個数: 16

約数和(自身を含む): 44740080

約数和(自身を除く): 24855640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497111, 994222, 1988444, 2485555, 3976888, 4971110, 9942220, 19884440]

約数ペア:

[(1, 19884440), (2, 9942220), (4, 4971110), (5, 3976888), (8, 2485555), (10, 1988444), (20, 994222), (40, 497111)]