18956440

素因数分解:

$2^3\times 5^1\times {\mathrm{473911}}^1$

素因数の和:473922

約数の個数: 16

約数和(自身を含む): 42652080

約数和(自身を除く): 23695640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 473911, 947822, 1895644, 2369555, 3791288, 4739110, 9478220, 18956440]

約数ペア:

[(1, 18956440), (2, 9478220), (4, 4739110), (5, 3791288), (8, 2369555), (10, 1895644), (20, 947822), (40, 473911)]