640581760

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:703

約数の個数: 256

約数和(自身を含む): 1998743040

約数和(自身を除く): 1358161280

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 17, 20, 26, 28, 32, 34, 35, 40, 52, 56, 64, 65, 68, 70, 80, 85, 91, 104, 112, 119, 128, 130, 136, 140, 160, 170, 182, 208, 221, 224, 238, 260, 272, 280, 320, 340, 364, 416, 442, 448, 455, 476, 520, 544, 560, 595, 640, 647, 680, 728, 832, 884, 896, 910, 952, 1040, 1088, 1105, 1120, 1190, 1294, 1360, 1456, 1547, 1664, 1768, 1820, 1904, 2080, 2176, 2210, 2240, 2380, 2588, 2720, 2912, 3094, 3235, 3536, 3640, 3808, 4160, 4420, 4480, 4529, 4760, 5176, 5440, 5824, 6188, 6470, 7072, 7280, 7616, 7735, 8320, 8411, 8840, 9058, 9520, 10352, 10880, 10999, 11648, 12376, 12940, 14144, 14560, 15232, 15470, 16822, 17680, 18116, 19040, 20704, 21998, 22645, 24752, 25880, 28288, 29120, 30940, 33644, 35360, 36232, 38080, 41408, 42055, 43996, 45290, 49504, 51760, 54995, 58240, 58877, 61880, 67288, 70720, 72464, 76160, 76993, 82816, 84110, 87992, 90580, 99008, 103520, 109990, 117754, 123760, 134576, 141440, 142987, 144928, 153986, 168220, 175984, 181160, 198016, 207040, 219980, 235508, 247520, 269152, 285974, 289856, 294385, 307972, 336440, 351968, 362320, 384965, 414080, 439960, 471016, 495040, 538304, 571948, 579712, 588770, 615944, 672880, 703936, 714935, 724640, 769930, 879920, 942032, 990080, 1000909, 1076608, 1143896, 1177540, 1231888, 1345760, 1407872, 1429870, 1449280, 1539860, 1759840, 1884064, 2001818, 2287792, 2355080, 2463776, 2691520, 2859740, 2898560, 3079720, 3519680, 3768128, 4003636, 4575584, 4710160, 4927552, 5004545, 5383040, 5719480, 6159440, 7039360, 7536256, 8007272, 9151168, 9420320, 9855104, 10009090, 11438960, 12318880, 16014544, 18302336, 18840640, 20018180, 22877920, 24637760, 32029088, 37681280, 40036360, 45755840, 49275520, 64058176, 80072720, 91511680, 128116352, 160145440, 320290880, 640581760]

約数ペア:

[(1, 640581760), (2, 320290880), (4, 160145440), (5, 128116352), (7, 91511680), (8, 80072720), (10, 64058176), (13, 49275520), (14, 45755840), (16, 40036360), (17, 37681280), (20, 32029088), (26, 24637760), (28, 22877920), (32, 20018180), (34, 18840640), (35, 18302336), (40, 16014544), (52, 12318880), (56, 11438960), (64, 10009090), (65, 9855104), (68, 9420320), (70, 9151168), (80, 8007272), (85, 7536256), (91, 7039360), (104, 6159440), (112, 5719480), (119, 5383040), (128, 5004545), (130, 4927552), (136, 4710160), (140, 4575584), (160, 4003636), (170, 3768128), (182, 3519680), (208, 3079720), (221, 2898560), (224, 2859740), (238, 2691520), (260, 2463776), (272, 2355080), (280, 2287792), (320, 2001818), (340, 1884064), (364, 1759840), (416, 1539860), (442, 1449280), (448, 1429870), (455, 1407872), (476, 1345760), (520, 1231888), (544, 1177540), (560, 1143896), (595, 1076608), (640, 1000909), (647, 990080), (680, 942032), (728, 879920), (832, 769930), (884, 724640), (896, 714935), (910, 703936), (952, 672880), (1040, 615944), (1088, 588770), (1105, 579712), (1120, 571948), (1190, 538304), (1294, 495040), (1360, 471016), (1456, 439960), (1547, 414080), (1664, 384965), (1768, 362320), (1820, 351968), (1904, 336440), (2080, 307972), (2176, 294385), (2210, 289856), (2240, 285974), (2380, 269152), (2588, 247520), (2720, 235508), (2912, 219980), (3094, 207040), (3235, 198016), (3536, 181160), (3640, 175984), (3808, 168220), (4160, 153986), (4420, 144928), (4480, 142987), (4529, 141440), (4760, 134576), (5176, 123760), (5440, 117754), (5824, 109990), (6188, 103520), (6470, 99008), (7072, 90580), (7280, 87992), (7616, 84110), (7735, 82816), (8320, 76993), (8411, 76160), (8840, 72464), (9058, 70720), (9520, 67288), (10352, 61880), (10880, 58877), (10999, 58240), (11648, 54995), (12376, 51760), (12940, 49504), (14144, 45290), (14560, 43996), (15232, 42055), (15470, 41408), (16822, 38080), (17680, 36232), (18116, 35360), (19040, 33644), (20704, 30940), (21998, 29120), (22645, 28288), (24752, 25880)]