78486489

素因数分解:

$3^4\times {\mathrm{139}}^1\times {\mathrm{6971}}^1$

素因数の和:7122

約数の個数: 20

約数和(自身を含む): 118105680

約数和(自身を除く): 39619191

約数列:

[1, 3, 9, 27, 81, 139, 417, 1251, 3753, 6971, 11259, 20913, 62739, 188217, 564651, 968969, 2906907, 8720721, 26162163, 78486489]

約数ペア:

[(1, 78486489), (3, 26162163), (9, 8720721), (27, 2906907), (81, 968969), (139, 564651), (417, 188217), (1251, 62739), (3753, 20913), (6971, 11259)]