12191715

素因数分解:

$3^4\times 5^1\times {\mathrm{30103}}^1$

素因数の和:30120

約数の個数: 20

約数和(自身を含む): 21855504

約数和(自身を除く): 9663789

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 30103, 90309, 150515, 270927, 451545, 812781, 1354635, 2438343, 4063905, 12191715]

約数ペア:

[(1, 12191715), (3, 4063905), (5, 2438343), (9, 1354635), (15, 812781), (27, 451545), (45, 270927), (81, 150515), (135, 90309), (405, 30103)]