81356967

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{13759}}^1$

素因数の和:13844

約数の個数: 20

約数和(自身を含む): 123207040

約数和(自身を除く): 41850073

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 5913, 13759, 41277, 123831, 371493, 1004407, 1114479, 3013221, 9039663, 27118989, 81356967]

約数ペア:

[(1, 81356967), (3, 27118989), (9, 9039663), (27, 3013221), (73, 1114479), (81, 1004407), (219, 371493), (657, 123831), (1971, 41277), (5913, 13759)]