19716440

素因数分解:

$2^3\times 5^1\times {\mathrm{492911}}^1$

素因数の和:492922

約数の個数: 16

約数和(自身を含む): 44362080

約数和(自身を除く): 24645640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 492911, 985822, 1971644, 2464555, 3943288, 4929110, 9858220, 19716440]

約数ペア:

[(1, 19716440), (2, 9858220), (4, 4929110), (5, 3943288), (8, 2464555), (10, 1971644), (20, 985822), (40, 492911)]