641437440

素因数分解:

$2^8\times 3^1\times 5^1\times 7^3\times {\mathrm{487}}^1$

素因数の和:532

約数の個数: 288

約数和(自身を含む): 2393932800

約数和(自身を除く): 1752495360

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 64, 70, 80, 84, 96, 98, 105, 112, 120, 128, 140, 147, 160, 168, 192, 196, 210, 224, 240, 245, 256, 280, 294, 320, 336, 343, 384, 392, 420, 448, 480, 487, 490, 560, 588, 640, 672, 686, 735, 768, 784, 840, 896, 960, 974, 980, 1029, 1120, 1176, 1280, 1344, 1372, 1461, 1470, 1568, 1680, 1715, 1792, 1920, 1948, 1960, 2058, 2240, 2352, 2435, 2688, 2744, 2922, 2940, 3136, 3360, 3409, 3430, 3840, 3896, 3920, 4116, 4480, 4704, 4870, 5145, 5376, 5488, 5844, 5880, 6272, 6720, 6818, 6860, 7305, 7792, 7840, 8232, 8960, 9408, 9740, 10227, 10290, 10976, 11688, 11760, 12544, 13440, 13636, 13720, 14610, 15584, 15680, 16464, 17045, 18816, 19480, 20454, 20580, 21952, 23376, 23520, 23863, 26880, 27272, 27440, 29220, 31168, 31360, 32928, 34090, 37632, 38960, 40908, 41160, 43904, 46752, 47040, 47726, 51135, 54544, 54880, 58440, 62336, 62720, 65856, 68180, 71589, 77920, 81816, 82320, 87808, 93504, 94080, 95452, 102270, 109088, 109760, 116880, 119315, 124672, 131712, 136360, 143178, 155840, 163632, 164640, 167041, 187008, 188160, 190904, 204540, 218176, 219520, 233760, 238630, 263424, 272720, 286356, 311680, 327264, 329280, 334082, 357945, 374016, 381808, 409080, 436352, 439040, 467520, 477260, 501123, 545440, 572712, 623360, 654528, 658560, 668164, 715890, 763616, 818160, 835205, 872704, 935040, 954520, 1002246, 1090880, 1145424, 1309056, 1317120, 1336328, 1431780, 1527232, 1636320, 1670410, 1870080, 1909040, 2004492, 2181760, 2290848, 2505615, 2618112, 2672656, 2863560, 3054464, 3272640, 3340820, 3818080, 4008984, 4363520, 4581696, 5011230, 5345312, 5727120, 6108928, 6545280, 6681640, 7636160, 8017968, 9163392, 10022460, 10690624, 11454240, 13090560, 13363280, 15272320, 16035936, 18326784, 20044920, 21381248, 22908480, 26726560, 30544640, 32071872, 40089840, 42762496, 45816960, 53453120, 64143744, 80179680, 91633920, 106906240, 128287488, 160359360, 213812480, 320718720, 641437440]

約数ペア:

[(1, 641437440), (2, 320718720), (3, 213812480), (4, 160359360), (5, 128287488), (6, 106906240), (7, 91633920), (8, 80179680), (10, 64143744), (12, 53453120), (14, 45816960), (15, 42762496), (16, 40089840), (20, 32071872), (21, 30544640), (24, 26726560), (28, 22908480), (30, 21381248), (32, 20044920), (35, 18326784), (40, 16035936), (42, 15272320), (48, 13363280), (49, 13090560), (56, 11454240), (60, 10690624), (64, 10022460), (70, 9163392), (80, 8017968), (84, 7636160), (96, 6681640), (98, 6545280), (105, 6108928), (112, 5727120), (120, 5345312), (128, 5011230), (140, 4581696), (147, 4363520), (160, 4008984), (168, 3818080), (192, 3340820), (196, 3272640), (210, 3054464), (224, 2863560), (240, 2672656), (245, 2618112), (256, 2505615), (280, 2290848), (294, 2181760), (320, 2004492), (336, 1909040), (343, 1870080), (384, 1670410), (392, 1636320), (420, 1527232), (448, 1431780), (480, 1336328), (487, 1317120), (490, 1309056), (560, 1145424), (588, 1090880), (640, 1002246), (672, 954520), (686, 935040), (735, 872704), (768, 835205), (784, 818160), (840, 763616), (896, 715890), (960, 668164), (974, 658560), (980, 654528), (1029, 623360), (1120, 572712), (1176, 545440), (1280, 501123), (1344, 477260), (1372, 467520), (1461, 439040), (1470, 436352), (1568, 409080), (1680, 381808), (1715, 374016), (1792, 357945), (1920, 334082), (1948, 329280), (1960, 327264), (2058, 311680), (2240, 286356), (2352, 272720), (2435, 263424), (2688, 238630), (2744, 233760), (2922, 219520), (2940, 218176), (3136, 204540), (3360, 190904), (3409, 188160), (3430, 187008), (3840, 167041), (3896, 164640), (3920, 163632), (4116, 155840), (4480, 143178), (4704, 136360), (4870, 131712), (5145, 124672), (5376, 119315), (5488, 116880), (5844, 109760), (5880, 109088), (6272, 102270), (6720, 95452), (6818, 94080), (6860, 93504), (7305, 87808), (7792, 82320), (7840, 81816), (8232, 77920), (8960, 71589), (9408, 68180), (9740, 65856), (10227, 62720), (10290, 62336), (10976, 58440), (11688, 54880), (11760, 54544), (12544, 51135), (13440, 47726), (13636, 47040), (13720, 46752), (14610, 43904), (15584, 41160), (15680, 40908), (16464, 38960), (17045, 37632), (18816, 34090), (19480, 32928), (20454, 31360), (20580, 31168), (21952, 29220), (23376, 27440), (23520, 27272), (23863, 26880)]