18889155

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3851}}^1$

素因数の和:3971

約数の個数: 24

約数和(自身を含む): 33050160

約数和(自身を除く): 14161005

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 3851, 4905, 11553, 19255, 34659, 57765, 173295, 419759, 1259277, 2098795, 3777831, 6296385, 18889155]

約数ペア:

[(1, 18889155), (3, 6296385), (5, 3777831), (9, 2098795), (15, 1259277), (45, 419759), (109, 173295), (327, 57765), (545, 34659), (981, 19255), (1635, 11553), (3851, 4905)]