686961

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{257}}^1$

素因数の和:283

約数の個数: 24

約数和(自身を含む): 1126944

約数和(自身を除く): 439983

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 243, 257, 297, 771, 891, 2313, 2673, 2827, 6939, 8481, 20817, 25443, 62451, 76329, 228987, 686961]

約数ペア:

[(1, 686961), (3, 228987), (9, 76329), (11, 62451), (27, 25443), (33, 20817), (81, 8481), (99, 6939), (243, 2827), (257, 2673), (297, 2313), (771, 891)]