18109180

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{2161}}^1$

素因数の和:2589

約数の個数: 24

約数和(自身を含む): 38137680

約数和(自身を除く): 20028500

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 2161, 4190, 4322, 8380, 8644, 10805, 21610, 43220, 905459, 1810918, 3621836, 4527295, 9054590, 18109180]

約数ペア:

[(1, 18109180), (2, 9054590), (4, 4527295), (5, 3621836), (10, 1810918), (20, 905459), (419, 43220), (838, 21610), (1676, 10805), (2095, 8644), (2161, 8380), (4190, 4322)]