687916881

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{197507}}^1$

素因数の和:197562

約数の個数: 20

約数和(自身を含む): 1051532592

約数和(自身を除く): 363615711

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 197507, 592521, 1777563, 5332689, 8492801, 15998067, 25478403, 76435209, 229305627, 687916881]

約数ペア:

[(1, 687916881), (3, 229305627), (9, 76435209), (27, 25478403), (43, 15998067), (81, 8492801), (129, 5332689), (387, 1777563), (1161, 592521), (3483, 197507)]