640236960

素因数分解:

$2^5\times 3^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{499}}^1$

素因数の和:543

約数の個数: 336

約数和(自身を含む): 2478924000

約数和(自身を除く): 1838687040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 32, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 81, 88, 90, 96, 99, 108, 110, 120, 132, 135, 144, 160, 162, 165, 176, 180, 198, 216, 220, 240, 243, 264, 270, 288, 297, 324, 330, 352, 360, 396, 405, 432, 440, 480, 486, 495, 499, 528, 540, 594, 648, 660, 720, 729, 792, 810, 864, 880, 891, 972, 990, 998, 1056, 1080, 1188, 1215, 1296, 1320, 1440, 1458, 1485, 1497, 1584, 1620, 1760, 1782, 1944, 1980, 1996, 2160, 2376, 2430, 2495, 2592, 2640, 2673, 2916, 2970, 2994, 3168, 3240, 3564, 3645, 3888, 3960, 3992, 4320, 4455, 4491, 4752, 4860, 4990, 5280, 5346, 5489, 5832, 5940, 5988, 6480, 7128, 7290, 7485, 7776, 7920, 7984, 8019, 8910, 8982, 9504, 9720, 9980, 10692, 10978, 11664, 11880, 11976, 12960, 13365, 13473, 14256, 14580, 14970, 15840, 15968, 16038, 16467, 17820, 17964, 19440, 19960, 21384, 21956, 22455, 23328, 23760, 23952, 26730, 26946, 27445, 28512, 29160, 29940, 32076, 32934, 35640, 35928, 38880, 39920, 40095, 40419, 42768, 43912, 44910, 47520, 47904, 49401, 53460, 53892, 54890, 58320, 59880, 64152, 65868, 67365, 71280, 71856, 79840, 80190, 80838, 82335, 85536, 87824, 89820, 98802, 106920, 107784, 109780, 116640, 119760, 121257, 128304, 131736, 134730, 142560, 143712, 148203, 160380, 161676, 164670, 175648, 179640, 197604, 202095, 213840, 215568, 219560, 239520, 242514, 247005, 256608, 263472, 269460, 296406, 320760, 323352, 329340, 359280, 363771, 395208, 404190, 427680, 431136, 439120, 444609, 485028, 494010, 526944, 538920, 592812, 606285, 641520, 646704, 658680, 718560, 727542, 741015, 790416, 808380, 878240, 889218, 970056, 988020, 1077840, 1185624, 1212570, 1283040, 1293408, 1317360, 1333827, 1455084, 1482030, 1580832, 1616760, 1778436, 1818855, 1940112, 1976040, 2155680, 2223045, 2371248, 2425140, 2634720, 2667654, 2910168, 2964060, 3233520, 3556872, 3637710, 3880224, 3952080, 4001481, 4446090, 4742496, 4850280, 5335308, 5820336, 5928120, 6467040, 6669135, 7113744, 7275420, 7904160, 8002962, 8892180, 9700560, 10670616, 11640672, 11856240, 13338270, 14227488, 14550840, 16005924, 17784360, 19401120, 20007405, 21341232, 23712480, 26676540, 29101680, 32011848, 35568720, 40014810, 42682464, 53353080, 58203360, 64023696, 71137440, 80029620, 106706160, 128047392, 160059240, 213412320, 320118480, 640236960]

約数ペア:

[(1, 640236960), (2, 320118480), (3, 213412320), (4, 160059240), (5, 128047392), (6, 106706160), (8, 80029620), (9, 71137440), (10, 64023696), (11, 58203360), (12, 53353080), (15, 42682464), (16, 40014810), (18, 35568720), (20, 32011848), (22, 29101680), (24, 26676540), (27, 23712480), (30, 21341232), (32, 20007405), (33, 19401120), (36, 17784360), (40, 16005924), (44, 14550840), (45, 14227488), (48, 13338270), (54, 11856240), (55, 11640672), (60, 10670616), (66, 9700560), (72, 8892180), (80, 8002962), (81, 7904160), (88, 7275420), (90, 7113744), (96, 6669135), (99, 6467040), (108, 5928120), (110, 5820336), (120, 5335308), (132, 4850280), (135, 4742496), (144, 4446090), (160, 4001481), (162, 3952080), (165, 3880224), (176, 3637710), (180, 3556872), (198, 3233520), (216, 2964060), (220, 2910168), (240, 2667654), (243, 2634720), (264, 2425140), (270, 2371248), (288, 2223045), (297, 2155680), (324, 1976040), (330, 1940112), (352, 1818855), (360, 1778436), (396, 1616760), (405, 1580832), (432, 1482030), (440, 1455084), (480, 1333827), (486, 1317360), (495, 1293408), (499, 1283040), (528, 1212570), (540, 1185624), (594, 1077840), (648, 988020), (660, 970056), (720, 889218), (729, 878240), (792, 808380), (810, 790416), (864, 741015), (880, 727542), (891, 718560), (972, 658680), (990, 646704), (998, 641520), (1056, 606285), (1080, 592812), (1188, 538920), (1215, 526944), (1296, 494010), (1320, 485028), (1440, 444609), (1458, 439120), (1485, 431136), (1497, 427680), (1584, 404190), (1620, 395208), (1760, 363771), (1782, 359280), (1944, 329340), (1980, 323352), (1996, 320760), (2160, 296406), (2376, 269460), (2430, 263472), (2495, 256608), (2592, 247005), (2640, 242514), (2673, 239520), (2916, 219560), (2970, 215568), (2994, 213840), (3168, 202095), (3240, 197604), (3564, 179640), (3645, 175648), (3888, 164670), (3960, 161676), (3992, 160380), (4320, 148203), (4455, 143712), (4491, 142560), (4752, 134730), (4860, 131736), (4990, 128304), (5280, 121257), (5346, 119760), (5489, 116640), (5832, 109780), (5940, 107784), (5988, 106920), (6480, 98802), (7128, 89820), (7290, 87824), (7485, 85536), (7776, 82335), (7920, 80838), (7984, 80190), (8019, 79840), (8910, 71856), (8982, 71280), (9504, 67365), (9720, 65868), (9980, 64152), (10692, 59880), (10978, 58320), (11664, 54890), (11880, 53892), (11976, 53460), (12960, 49401), (13365, 47904), (13473, 47520), (14256, 44910), (14580, 43912), (14970, 42768), (15840, 40419), (15968, 40095), (16038, 39920), (16467, 38880), (17820, 35928), (17964, 35640), (19440, 32934), (19960, 32076), (21384, 29940), (21956, 29160), (22455, 28512), (23328, 27445), (23760, 26946), (23952, 26730)]