640074240

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2137}}^1$

素因数の和:2179

約数の個数: 240

約数和(自身を含む): 2388394008

約数和(自身を除く): 1748319768

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 64, 65, 72, 78, 80, 90, 96, 104, 117, 120, 128, 130, 144, 156, 160, 180, 192, 195, 208, 234, 240, 256, 260, 288, 312, 320, 360, 384, 390, 416, 468, 480, 512, 520, 576, 585, 624, 640, 720, 768, 780, 832, 936, 960, 1040, 1152, 1170, 1248, 1280, 1440, 1536, 1560, 1664, 1872, 1920, 2080, 2137, 2304, 2340, 2496, 2560, 2880, 3120, 3328, 3744, 3840, 4160, 4274, 4608, 4680, 4992, 5760, 6240, 6411, 6656, 7488, 7680, 8320, 8548, 9360, 9984, 10685, 11520, 12480, 12822, 14976, 16640, 17096, 18720, 19233, 19968, 21370, 23040, 24960, 25644, 27781, 29952, 32055, 33280, 34192, 37440, 38466, 42740, 49920, 51288, 55562, 59904, 64110, 68384, 74880, 76932, 83343, 85480, 96165, 99840, 102576, 111124, 128220, 136768, 138905, 149760, 153864, 166686, 170960, 192330, 205152, 222248, 250029, 256440, 273536, 277810, 299520, 307728, 333372, 341920, 384660, 410304, 416715, 444496, 500058, 512880, 547072, 555620, 615456, 666744, 683840, 769320, 820608, 833430, 888992, 1000116, 1025760, 1094144, 1111240, 1230912, 1250145, 1333488, 1367680, 1538640, 1641216, 1666860, 1777984, 2000232, 2051520, 2222480, 2461824, 2500290, 2666976, 2735360, 3077280, 3282432, 3333720, 3555968, 4000464, 4103040, 4444960, 4923648, 5000580, 5333952, 5470720, 6154560, 6667440, 7111936, 8000928, 8206080, 8889920, 9847296, 10001160, 10667904, 12309120, 13334880, 14223872, 16001856, 16412160, 17779840, 20002320, 21335808, 24618240, 26669760, 32003712, 35559680, 40004640, 42671616, 49236480, 53339520, 64007424, 71119360, 80009280, 106679040, 128014848, 160018560, 213358080, 320037120, 640074240]

約数ペア:

[(1, 640074240), (2, 320037120), (3, 213358080), (4, 160018560), (5, 128014848), (6, 106679040), (8, 80009280), (9, 71119360), (10, 64007424), (12, 53339520), (13, 49236480), (15, 42671616), (16, 40004640), (18, 35559680), (20, 32003712), (24, 26669760), (26, 24618240), (30, 21335808), (32, 20002320), (36, 17779840), (39, 16412160), (40, 16001856), (45, 14223872), (48, 13334880), (52, 12309120), (60, 10667904), (64, 10001160), (65, 9847296), (72, 8889920), (78, 8206080), (80, 8000928), (90, 7111936), (96, 6667440), (104, 6154560), (117, 5470720), (120, 5333952), (128, 5000580), (130, 4923648), (144, 4444960), (156, 4103040), (160, 4000464), (180, 3555968), (192, 3333720), (195, 3282432), (208, 3077280), (234, 2735360), (240, 2666976), (256, 2500290), (260, 2461824), (288, 2222480), (312, 2051520), (320, 2000232), (360, 1777984), (384, 1666860), (390, 1641216), (416, 1538640), (468, 1367680), (480, 1333488), (512, 1250145), (520, 1230912), (576, 1111240), (585, 1094144), (624, 1025760), (640, 1000116), (720, 888992), (768, 833430), (780, 820608), (832, 769320), (936, 683840), (960, 666744), (1040, 615456), (1152, 555620), (1170, 547072), (1248, 512880), (1280, 500058), (1440, 444496), (1536, 416715), (1560, 410304), (1664, 384660), (1872, 341920), (1920, 333372), (2080, 307728), (2137, 299520), (2304, 277810), (2340, 273536), (2496, 256440), (2560, 250029), (2880, 222248), (3120, 205152), (3328, 192330), (3744, 170960), (3840, 166686), (4160, 153864), (4274, 149760), (4608, 138905), (4680, 136768), (4992, 128220), (5760, 111124), (6240, 102576), (6411, 99840), (6656, 96165), (7488, 85480), (7680, 83343), (8320, 76932), (8548, 74880), (9360, 68384), (9984, 64110), (10685, 59904), (11520, 55562), (12480, 51288), (12822, 49920), (14976, 42740), (16640, 38466), (17096, 37440), (18720, 34192), (19233, 33280), (19968, 32055), (21370, 29952), (23040, 27781), (24960, 25644)]