180405

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 330720

約数和(自身を除く): 150315

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 211, 285, 633, 855, 1055, 1899, 3165, 4009, 9495, 12027, 20045, 36081, 60135, 180405]

約数ペア:

[(1, 180405), (3, 60135), (5, 36081), (9, 20045), (15, 12027), (19, 9495), (45, 4009), (57, 3165), (95, 1899), (171, 1055), (211, 855), (285, 633)]