9978147

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{2621}}^1$

素因数の和:2680

約数の個数: 20

約数和(自身を含む): 15228576

約数和(自身を除く): 5250429

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 2621, 3807, 7863, 23589, 70767, 123187, 212301, 369561, 1108683, 3326049, 9978147]

約数ペア:

[(1, 9978147), (3, 3326049), (9, 1108683), (27, 369561), (47, 212301), (81, 123187), (141, 70767), (423, 23589), (1269, 7863), (2621, 3807)]