28201689

素因数分解:

$3^4\times {\mathrm{397}}^1\times {\mathrm{877}}^1$

素因数の和:1286

約数の個数: 20

約数和(自身を含む): 42282724

約数和(自身を除く): 14081035

約数列:

[1, 3, 9, 27, 81, 397, 877, 1191, 2631, 3573, 7893, 10719, 23679, 32157, 71037, 348169, 1044507, 3133521, 9400563, 28201689]

約数ペア:

[(1, 28201689), (3, 9400563), (9, 3133521), (27, 1044507), (81, 348169), (397, 71037), (877, 32157), (1191, 23679), (2631, 10719), (3573, 7893)]