18420405

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{64633}}^1$

素因数の和:64660

約数の個数: 16

約数和(自身を含む): 31024320

約数和(自身を除く): 12603915

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 64633, 193899, 323165, 969495, 1228027, 3684081, 6140135, 18420405]

約数ペア:

[(1, 18420405), (3, 6140135), (5, 3684081), (15, 1228027), (19, 969495), (57, 323165), (95, 193899), (285, 64633)]