18806860

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8627}}^1$

素因数の和:8745

約数の個数: 24

約数和(自身を含む): 39861360

約数和(自身を除く): 21054500

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 8627, 17254, 34508, 43135, 86270, 172540, 940343, 1880686, 3761372, 4701715, 9403430, 18806860]

約数ペア:

[(1, 18806860), (2, 9403430), (4, 4701715), (5, 3761372), (10, 1880686), (20, 940343), (109, 172540), (218, 86270), (436, 43135), (545, 34508), (1090, 17254), (2180, 8627)]