2643759

素因数分解:

$3^4\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:396

約数の個数: 20

約数和(自身を含む): 3995904

約数和(自身を除く): 1352145

約数列:

[1, 3, 9, 27, 81, 127, 257, 381, 771, 1143, 2313, 3429, 6939, 10287, 20817, 32639, 97917, 293751, 881253, 2643759]

約数ペア:

[(1, 2643759), (3, 881253), (9, 293751), (27, 97917), (81, 32639), (127, 20817), (257, 10287), (381, 6939), (771, 3429), (1143, 2313)]