639351216

素因数分解:

$2^4\times 3^2\times 7^2\times {\mathrm{19}}^2\times {\mathrm{251}}^1$

素因数の和:317

約数の個数: 270

約数和(自身を含む): 2205491652

約数和(自身を除く): 1566140436

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 19, 21, 24, 28, 36, 38, 42, 48, 49, 56, 57, 63, 72, 76, 84, 98, 112, 114, 126, 133, 144, 147, 152, 168, 171, 196, 228, 251, 252, 266, 294, 304, 336, 342, 361, 392, 399, 441, 456, 502, 504, 532, 588, 684, 722, 753, 784, 798, 882, 912, 931, 1004, 1008, 1064, 1083, 1176, 1197, 1368, 1444, 1506, 1596, 1757, 1764, 1862, 2008, 2128, 2166, 2259, 2352, 2394, 2527, 2736, 2793, 2888, 3012, 3192, 3249, 3514, 3528, 3724, 4016, 4332, 4518, 4769, 4788, 5054, 5271, 5586, 5776, 6024, 6384, 6498, 7028, 7056, 7448, 7581, 8379, 8664, 9036, 9538, 9576, 10108, 10542, 11172, 12048, 12299, 12996, 14056, 14307, 14896, 15162, 15813, 16758, 17328, 17689, 18072, 19076, 19152, 20216, 21084, 22344, 22743, 24598, 25992, 28112, 28614, 30324, 31626, 33383, 33516, 35378, 36144, 36897, 38152, 40432, 42168, 42921, 44688, 45486, 49196, 51984, 53067, 57228, 60648, 63252, 66766, 67032, 70756, 73794, 76304, 84336, 85842, 90611, 90972, 98392, 100149, 106134, 110691, 114456, 121296, 126504, 133532, 134064, 141512, 147588, 159201, 171684, 181222, 181944, 196784, 200298, 212268, 221382, 228912, 233681, 253008, 267064, 271833, 283024, 295176, 300447, 318402, 343368, 362444, 363888, 400596, 424536, 442764, 467362, 534128, 543666, 590352, 600894, 634277, 636804, 686736, 701043, 724888, 801192, 815499, 849072, 885528, 934724, 1087332, 1201788, 1268554, 1273608, 1402086, 1449776, 1602384, 1630998, 1771056, 1869448, 1902831, 2103129, 2174664, 2403576, 2537108, 2547216, 2804172, 3261996, 3738896, 3805662, 4206258, 4349328, 4439939, 4807152, 5074216, 5608344, 5708493, 6523992, 7611324, 8412516, 8879878, 10148432, 11216688, 11416986, 13047984, 13319817, 15222648, 16825032, 17759756, 22833972, 26639634, 30445296, 33650064, 35519512, 39959451, 45667944, 53279268, 71039024, 79918902, 91335888, 106558536, 159837804, 213117072, 319675608, 639351216]

約数ペア:

[(1, 639351216), (2, 319675608), (3, 213117072), (4, 159837804), (6, 106558536), (7, 91335888), (8, 79918902), (9, 71039024), (12, 53279268), (14, 45667944), (16, 39959451), (18, 35519512), (19, 33650064), (21, 30445296), (24, 26639634), (28, 22833972), (36, 17759756), (38, 16825032), (42, 15222648), (48, 13319817), (49, 13047984), (56, 11416986), (57, 11216688), (63, 10148432), (72, 8879878), (76, 8412516), (84, 7611324), (98, 6523992), (112, 5708493), (114, 5608344), (126, 5074216), (133, 4807152), (144, 4439939), (147, 4349328), (152, 4206258), (168, 3805662), (171, 3738896), (196, 3261996), (228, 2804172), (251, 2547216), (252, 2537108), (266, 2403576), (294, 2174664), (304, 2103129), (336, 1902831), (342, 1869448), (361, 1771056), (392, 1630998), (399, 1602384), (441, 1449776), (456, 1402086), (502, 1273608), (504, 1268554), (532, 1201788), (588, 1087332), (684, 934724), (722, 885528), (753, 849072), (784, 815499), (798, 801192), (882, 724888), (912, 701043), (931, 686736), (1004, 636804), (1008, 634277), (1064, 600894), (1083, 590352), (1176, 543666), (1197, 534128), (1368, 467362), (1444, 442764), (1506, 424536), (1596, 400596), (1757, 363888), (1764, 362444), (1862, 343368), (2008, 318402), (2128, 300447), (2166, 295176), (2259, 283024), (2352, 271833), (2394, 267064), (2527, 253008), (2736, 233681), (2793, 228912), (2888, 221382), (3012, 212268), (3192, 200298), (3249, 196784), (3514, 181944), (3528, 181222), (3724, 171684), (4016, 159201), (4332, 147588), (4518, 141512), (4769, 134064), (4788, 133532), (5054, 126504), (5271, 121296), (5586, 114456), (5776, 110691), (6024, 106134), (6384, 100149), (6498, 98392), (7028, 90972), (7056, 90611), (7448, 85842), (7581, 84336), (8379, 76304), (8664, 73794), (9036, 70756), (9538, 67032), (9576, 66766), (10108, 63252), (10542, 60648), (11172, 57228), (12048, 53067), (12299, 51984), (12996, 49196), (14056, 45486), (14307, 44688), (14896, 42921), (15162, 42168), (15813, 40432), (16758, 38152), (17328, 36897), (17689, 36144), (18072, 35378), (19076, 33516), (19152, 33383), (20216, 31626), (21084, 30324), (22344, 28614), (22743, 28112), (24598, 25992)]