28166859

素因数分解:

$3^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{571}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 49969920

約数和(自身を除く): 21803061

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 243, 261, 567, 571, 609, 783, 1701, 1713, 1827, 2349, 3997, 5139, 5481, 7047, 11991, 15417, 16443, 16559, 35973, 46251, 49329, 49677, 107919, 115913, 138753, 149031, 323757, 347739, 447093, 971271, 1043217, 1341279, 3129651, 4023837, 9388953, 28166859]

約数ペア:

[(1, 28166859), (3, 9388953), (7, 4023837), (9, 3129651), (21, 1341279), (27, 1043217), (29, 971271), (63, 447093), (81, 347739), (87, 323757), (189, 149031), (203, 138753), (243, 115913), (261, 107919), (567, 49677), (571, 49329), (609, 46251), (783, 35973), (1701, 16559), (1713, 16443), (1827, 15417), (2349, 11991), (3997, 7047), (5139, 5481)]