640054370880

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{5557}}^1\times {\mathrm{13331}}^1$

素因数の和:18914

約数の個数: 224

約数和(自身を含む): 2258545322880

約数和(自身を除く): 1618490952000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2880, 4320, 5557, 8640, 11114, 13331, 16671, 22228, 26662, 27785, 33342, 39993, 44456, 50013, 53324, 55570, 66655, 66684, 79986, 83355, 88912, 100026, 106648, 111140, 119979, 133310, 133368, 150039, 159972, 166710, 177824, 199965, 200052, 213296, 222280, 239958, 250065, 266620, 266736, 300078, 319944, 333420, 355648, 359937, 399930, 400104, 426592, 444560, 479916, 500130, 533240, 533472, 599895, 600156, 639888, 666840, 719874, 750195, 799860, 800208, 853184, 889120, 959832, 1000260, 1066480, 1066944, 1199790, 1200312, 1279776, 1333680, 1439748, 1500390, 1599720, 1600416, 1778240, 1799685, 1919664, 2000520, 2132960, 2399580, 2400624, 2559552, 2667360, 2879496, 3000780, 3199440, 3200832, 3599370, 3839328, 4001040, 4265920, 4799160, 4801248, 5334720, 5758992, 6001560, 6398880, 7198740, 7678656, 8002080, 9598320, 9602496, 11517984, 12003120, 12797760, 14397480, 16004160, 19196640, 23035968, 24006240, 28794960, 38393280, 48012480, 57589920, 74080367, 115179840, 148160734, 222241101, 296321468, 370401835, 444482202, 592642936, 666723303, 740803670, 888964404, 1111205505, 1185285872, 1333446606, 1481607340, 1777928808, 2000169909, 2222411010, 2370571744, 2666893212, 2963214680, 3333616515, 3555857616, 4000339818, 4444822020, 4741143488, 5333786424, 5926429360, 6667233030, 7111715232, 8000679636, 8889644040, 10000849545, 10667572848, 11852858720, 13334466060, 14223430464, 16001359272, 17779288080, 20001699090, 21335145696, 23705717440, 26668932120, 32002718544, 35558576160, 40003398180, 42670291392, 53337864240, 64005437088, 71117152320, 80006796360, 106675728480, 128010874176, 160013592720, 213351456960, 320027185440, 640054370880]

約数ペア:

[(1, 640054370880), (2, 320027185440), (3, 213351456960), (4, 160013592720), (5, 128010874176), (6, 106675728480), (8, 80006796360), (9, 71117152320), (10, 64005437088), (12, 53337864240), (15, 42670291392), (16, 40003398180), (18, 35558576160), (20, 32002718544), (24, 26668932120), (27, 23705717440), (30, 21335145696), (32, 20001699090), (36, 17779288080), (40, 16001359272), (45, 14223430464), (48, 13334466060), (54, 11852858720), (60, 10667572848), (64, 10000849545), (72, 8889644040), (80, 8000679636), (90, 7111715232), (96, 6667233030), (108, 5926429360), (120, 5333786424), (135, 4741143488), (144, 4444822020), (160, 4000339818), (180, 3555857616), (192, 3333616515), (216, 2963214680), (240, 2666893212), (270, 2370571744), (288, 2222411010), (320, 2000169909), (360, 1777928808), (432, 1481607340), (480, 1333446606), (540, 1185285872), (576, 1111205505), (720, 888964404), (864, 740803670), (960, 666723303), (1080, 592642936), (1440, 444482202), (1728, 370401835), (2160, 296321468), (2880, 222241101), (4320, 148160734), (5557, 115179840), (8640, 74080367), (11114, 57589920), (13331, 48012480), (16671, 38393280), (22228, 28794960), (26662, 24006240), (27785, 23035968), (33342, 19196640), (39993, 16004160), (44456, 14397480), (50013, 12797760), (53324, 12003120), (55570, 11517984), (66655, 9602496), (66684, 9598320), (79986, 8002080), (83355, 7678656), (88912, 7198740), (100026, 6398880), (106648, 6001560), (111140, 5758992), (119979, 5334720), (133310, 4801248), (133368, 4799160), (150039, 4265920), (159972, 4001040), (166710, 3839328), (177824, 3599370), (199965, 3200832), (200052, 3199440), (213296, 3000780), (222280, 2879496), (239958, 2667360), (250065, 2559552), (266620, 2400624), (266736, 2399580), (300078, 2132960), (319944, 2000520), (333420, 1919664), (355648, 1799685), (359937, 1778240), (399930, 1600416), (400104, 1599720), (426592, 1500390), (444560, 1439748), (479916, 1333680), (500130, 1279776), (533240, 1200312), (533472, 1199790), (599895, 1066944), (600156, 1066480), (639888, 1000260), (666840, 959832), (719874, 889120), (750195, 853184), (799860, 800208)]