18000004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{1307}}^1$

素因数の和:1635

約数の個数: 24

約数和(自身を含む): 34499808

約数和(自身を除く): 16499804

約数列:

[1, 2, 4, 11, 22, 44, 313, 626, 1252, 1307, 2614, 3443, 5228, 6886, 13772, 14377, 28754, 57508, 409091, 818182, 1636364, 4500001, 9000002, 18000004]

約数ペア:

[(1, 18000004), (2, 9000002), (4, 4500001), (11, 1636364), (22, 818182), (44, 409091), (313, 57508), (626, 28754), (1252, 14377), (1307, 13772), (2614, 6886), (3443, 5228)]