18847540

素因数分解:

$2^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{3943}}^1$

素因数の和:4191

約数の個数: 24

約数和(自身を含む): 39755520

約数和(自身を除く): 20907980

約数列:

[1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390, 3943, 4780, 7886, 15772, 19715, 39430, 78860, 942377, 1884754, 3769508, 4711885, 9423770, 18847540]

約数ペア:

[(1, 18847540), (2, 9423770), (4, 4711885), (5, 3769508), (10, 1884754), (20, 942377), (239, 78860), (478, 39430), (956, 19715), (1195, 15772), (2390, 7886), (3943, 4780)]