12721239

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{3001}}^1$

素因数の和:3167

約数の個数: 16

約数和(自身を含む): 18972640

約数和(自身を除く): 6251401

約数列:

[1, 3, 9, 27, 157, 471, 1413, 3001, 4239, 9003, 27009, 81027, 471157, 1413471, 4240413, 12721239]

約数ペア:

[(1, 12721239), (3, 4240413), (9, 1413471), (27, 471157), (157, 81027), (471, 27009), (1413, 9003), (3001, 4239)]