19638040

素因数分解:

$2^3\times 5^1\times {\mathrm{490951}}^1$

素因数の和:490962

約数の個数: 16

約数和(自身を含む): 44185680

約数和(自身を除く): 24547640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 490951, 981902, 1963804, 2454755, 3927608, 4909510, 9819020, 19638040]

約数ペア:

[(1, 19638040), (2, 9819020), (4, 4909510), (5, 3927608), (8, 2454755), (10, 1963804), (20, 981902), (40, 490951)]