26666577

素因数分解:

$3^5\times 7^1\times {\mathrm{61}}^1\times {\mathrm{257}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 46580352

約数和(自身を除く): 19913775

約数列:

[1, 3, 7, 9, 21, 27, 61, 63, 81, 183, 189, 243, 257, 427, 549, 567, 771, 1281, 1647, 1701, 1799, 2313, 3843, 4941, 5397, 6939, 11529, 14823, 15677, 16191, 20817, 34587, 47031, 48573, 62451, 103761, 109739, 141093, 145719, 329217, 423279, 437157, 987651, 1269837, 2962953, 3809511, 8888859, 26666577]

約数ペア:

[(1, 26666577), (3, 8888859), (7, 3809511), (9, 2962953), (21, 1269837), (27, 987651), (61, 437157), (63, 423279), (81, 329217), (183, 145719), (189, 141093), (243, 109739), (257, 103761), (427, 62451), (549, 48573), (567, 47031), (771, 34587), (1281, 20817), (1647, 16191), (1701, 15677), (1799, 14823), (2313, 11529), (3843, 6939), (4941, 5397)]