18240471

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5237}}^1$

素因数の和:5292

約数の個数: 20

約数和(自身を含む): 27887112

約数和(自身を除く): 9646641

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5237, 15711, 47133, 141399, 225191, 424197, 675573, 2026719, 6080157, 18240471]

約数ペア:

[(1, 18240471), (3, 6080157), (9, 2026719), (27, 675573), (43, 424197), (81, 225191), (129, 141399), (387, 47133), (1161, 15711), (3483, 5237)]