278316081

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{79907}}^1$

素因数の和:79962

約数の個数: 20

約数和(自身を含む): 425430192

約数和(自身を除く): 147114111

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 79907, 239721, 719163, 2157489, 3436001, 6472467, 10308003, 30924009, 92772027, 278316081]

約数ペア:

[(1, 278316081), (3, 92772027), (9, 30924009), (27, 10308003), (43, 6472467), (81, 3436001), (129, 2157489), (387, 719163), (1161, 239721), (3483, 79907)]