28949319

素因数分解:

$3^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 52060160

約数和(自身を除く): 23110841

約数列:

[1, 3, 7, 9, 21, 27, 31, 61, 63, 81, 93, 183, 189, 217, 243, 279, 427, 549, 567, 651, 729, 837, 1281, 1647, 1701, 1891, 1953, 2187, 2511, 3843, 4941, 5103, 5673, 5859, 7533, 11529, 13237, 14823, 15309, 17019, 17577, 22599, 34587, 39711, 44469, 51057, 52731, 67797, 103761, 119133, 133407, 153171, 158193, 311283, 357399, 459513, 474579, 933849, 1072197, 1378539, 3216591, 4135617, 9649773, 28949319]

約数ペア:

[(1, 28949319), (3, 9649773), (7, 4135617), (9, 3216591), (21, 1378539), (27, 1072197), (31, 933849), (61, 474579), (63, 459513), (81, 357399), (93, 311283), (183, 158193), (189, 153171), (217, 133407), (243, 119133), (279, 103761), (427, 67797), (549, 52731), (567, 51057), (651, 44469), (729, 39711), (837, 34587), (1281, 22599), (1647, 17577), (1701, 17019), (1891, 15309), (1953, 14823), (2187, 13237), (2511, 11529), (3843, 7533), (4941, 5859), (5103, 5673)]