640191384

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{449}}^1$

素因数の和:535

約数の個数: 256

約数和(自身を含む): 2177280000

約数和(自身を除く): 1537088616

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 23, 24, 27, 28, 36, 41, 42, 46, 54, 56, 63, 69, 72, 82, 84, 92, 108, 123, 126, 138, 161, 164, 168, 184, 189, 207, 216, 246, 252, 276, 287, 322, 328, 369, 378, 414, 449, 483, 492, 504, 552, 574, 621, 644, 738, 756, 828, 861, 898, 943, 966, 984, 1107, 1148, 1242, 1288, 1347, 1449, 1476, 1512, 1656, 1722, 1796, 1886, 1932, 2214, 2296, 2484, 2583, 2694, 2829, 2898, 2952, 3143, 3444, 3592, 3772, 3864, 4041, 4347, 4428, 4968, 5166, 5388, 5658, 5796, 6286, 6601, 6888, 7544, 7749, 8082, 8487, 8694, 8856, 9429, 10327, 10332, 10776, 11316, 11592, 12123, 12572, 13202, 15498, 16164, 16974, 17388, 18409, 18858, 19803, 20654, 20664, 22632, 24246, 25144, 25461, 26404, 28287, 30981, 30996, 32328, 33948, 34776, 36818, 37716, 39606, 41308, 48492, 50922, 52808, 55227, 56574, 59409, 61962, 61992, 67896, 72289, 73636, 75432, 79212, 82616, 84861, 92943, 96984, 101844, 110454, 113148, 118818, 123924, 128863, 144578, 147272, 158424, 165681, 169722, 178227, 185886, 203688, 216867, 220908, 226296, 237636, 247848, 257726, 278829, 289156, 331362, 339444, 356454, 371772, 386589, 423407, 433734, 441816, 475272, 497043, 515452, 557658, 578312, 650601, 662724, 678888, 712908, 743544, 773178, 846814, 867468, 994086, 1030904, 1115316, 1159767, 1270221, 1301202, 1325448, 1425816, 1546356, 1693628, 1734936, 1951803, 1988172, 2230632, 2319534, 2540442, 2602404, 2963849, 3092712, 3387256, 3479301, 3810663, 3903606, 3976344, 4639068, 5080884, 5204808, 5927698, 6958602, 7621326, 7807212, 8891547, 9278136, 10161768, 11431989, 11855396, 13917204, 15242652, 15614424, 17783094, 22863978, 23710792, 26674641, 27834408, 30485304, 35566188, 45727956, 53349282, 71132376, 80023923, 91455912, 106698564, 160047846, 213397128, 320095692, 640191384]

約数ペア:

[(1, 640191384), (2, 320095692), (3, 213397128), (4, 160047846), (6, 106698564), (7, 91455912), (8, 80023923), (9, 71132376), (12, 53349282), (14, 45727956), (18, 35566188), (21, 30485304), (23, 27834408), (24, 26674641), (27, 23710792), (28, 22863978), (36, 17783094), (41, 15614424), (42, 15242652), (46, 13917204), (54, 11855396), (56, 11431989), (63, 10161768), (69, 9278136), (72, 8891547), (82, 7807212), (84, 7621326), (92, 6958602), (108, 5927698), (123, 5204808), (126, 5080884), (138, 4639068), (161, 3976344), (164, 3903606), (168, 3810663), (184, 3479301), (189, 3387256), (207, 3092712), (216, 2963849), (246, 2602404), (252, 2540442), (276, 2319534), (287, 2230632), (322, 1988172), (328, 1951803), (369, 1734936), (378, 1693628), (414, 1546356), (449, 1425816), (483, 1325448), (492, 1301202), (504, 1270221), (552, 1159767), (574, 1115316), (621, 1030904), (644, 994086), (738, 867468), (756, 846814), (828, 773178), (861, 743544), (898, 712908), (943, 678888), (966, 662724), (984, 650601), (1107, 578312), (1148, 557658), (1242, 515452), (1288, 497043), (1347, 475272), (1449, 441816), (1476, 433734), (1512, 423407), (1656, 386589), (1722, 371772), (1796, 356454), (1886, 339444), (1932, 331362), (2214, 289156), (2296, 278829), (2484, 257726), (2583, 247848), (2694, 237636), (2829, 226296), (2898, 220908), (2952, 216867), (3143, 203688), (3444, 185886), (3592, 178227), (3772, 169722), (3864, 165681), (4041, 158424), (4347, 147272), (4428, 144578), (4968, 128863), (5166, 123924), (5388, 118818), (5658, 113148), (5796, 110454), (6286, 101844), (6601, 96984), (6888, 92943), (7544, 84861), (7749, 82616), (8082, 79212), (8487, 75432), (8694, 73636), (8856, 72289), (9429, 67896), (10327, 61992), (10332, 61962), (10776, 59409), (11316, 56574), (11592, 55227), (12123, 52808), (12572, 50922), (13202, 48492), (15498, 41308), (16164, 39606), (16974, 37716), (17388, 36818), (18409, 34776), (18858, 33948), (19803, 32328), (20654, 30996), (20664, 30981), (22632, 28287), (24246, 26404), (25144, 25461)]