81181968

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1$

素因数の和:213

約数の個数: 160

約数和(自身を含む): 251983872

約数和(自身を除く): 170801904

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 41, 42, 48, 56, 71, 82, 83, 84, 112, 123, 142, 164, 166, 168, 213, 246, 249, 284, 287, 328, 332, 336, 426, 492, 497, 498, 568, 574, 581, 656, 664, 852, 861, 984, 994, 996, 1136, 1148, 1162, 1328, 1491, 1704, 1722, 1743, 1968, 1988, 1992, 2296, 2324, 2911, 2982, 3403, 3408, 3444, 3486, 3976, 3984, 4592, 4648, 5822, 5893, 5964, 6806, 6888, 6972, 7952, 8733, 9296, 10209, 11644, 11786, 11928, 13612, 13776, 13944, 17466, 17679, 20377, 20418, 23288, 23572, 23821, 23856, 27224, 27888, 34932, 35358, 40754, 40836, 41251, 46576, 47144, 47642, 54448, 61131, 69864, 70716, 71463, 81508, 81672, 82502, 94288, 95284, 122262, 123753, 139728, 141432, 142926, 163016, 163344, 165004, 190568, 241613, 244524, 247506, 282864, 285852, 326032, 330008, 381136, 483226, 489048, 495012, 571704, 660016, 724839, 966452, 978096, 990024, 1143408, 1449678, 1691291, 1932904, 1980048, 2899356, 3382582, 3865808, 5073873, 5798712, 6765164, 10147746, 11597424, 13530328, 20295492, 27060656, 40590984, 81181968]

約数ペア:

[(1, 81181968), (2, 40590984), (3, 27060656), (4, 20295492), (6, 13530328), (7, 11597424), (8, 10147746), (12, 6765164), (14, 5798712), (16, 5073873), (21, 3865808), (24, 3382582), (28, 2899356), (41, 1980048), (42, 1932904), (48, 1691291), (56, 1449678), (71, 1143408), (82, 990024), (83, 978096), (84, 966452), (112, 724839), (123, 660016), (142, 571704), (164, 495012), (166, 489048), (168, 483226), (213, 381136), (246, 330008), (249, 326032), (284, 285852), (287, 282864), (328, 247506), (332, 244524), (336, 241613), (426, 190568), (492, 165004), (497, 163344), (498, 163016), (568, 142926), (574, 141432), (581, 139728), (656, 123753), (664, 122262), (852, 95284), (861, 94288), (984, 82502), (994, 81672), (996, 81508), (1136, 71463), (1148, 70716), (1162, 69864), (1328, 61131), (1491, 54448), (1704, 47642), (1722, 47144), (1743, 46576), (1968, 41251), (1988, 40836), (1992, 40754), (2296, 35358), (2324, 34932), (2911, 27888), (2982, 27224), (3403, 23856), (3408, 23821), (3444, 23572), (3486, 23288), (3976, 20418), (3984, 20377), (4592, 17679), (4648, 17466), (5822, 13944), (5893, 13776), (5964, 13612), (6806, 11928), (6888, 11786), (6972, 11644), (7952, 10209), (8733, 9296)]