1277857280

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:265

約数の個数: 240

約数和(自身を含む): 3644204256

約数和(自身を除く): 2366346976

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 61, 64, 70, 80, 98, 112, 122, 128, 140, 160, 167, 196, 224, 244, 245, 256, 280, 305, 320, 334, 392, 427, 448, 488, 490, 512, 560, 610, 640, 668, 784, 835, 854, 896, 976, 980, 1120, 1169, 1220, 1280, 1336, 1568, 1670, 1708, 1792, 1952, 1960, 2135, 2240, 2338, 2440, 2560, 2672, 2989, 3136, 3340, 3416, 3584, 3904, 3920, 4270, 4480, 4676, 4880, 5344, 5845, 5978, 6272, 6680, 6832, 7808, 7840, 8183, 8540, 8960, 9352, 9760, 10187, 10688, 11690, 11956, 12544, 13360, 13664, 14945, 15616, 15680, 16366, 17080, 17920, 18704, 19520, 20374, 21376, 23380, 23912, 25088, 26720, 27328, 29890, 31232, 31360, 32732, 34160, 37408, 39040, 40748, 40915, 42752, 46760, 47824, 50935, 53440, 54656, 59780, 62720, 65464, 68320, 71309, 74816, 78080, 81496, 81830, 85504, 93520, 95648, 101870, 106880, 109312, 119560, 125440, 130928, 136640, 142618, 149632, 156160, 162992, 163660, 187040, 191296, 203740, 213760, 218624, 239120, 261856, 273280, 285236, 299264, 325984, 327320, 356545, 374080, 382592, 407480, 427520, 478240, 499163, 523712, 546560, 570472, 598528, 651968, 654640, 713090, 748160, 765184, 814960, 956480, 998326, 1047424, 1093120, 1140944, 1303936, 1309280, 1426180, 1496320, 1530368, 1629920, 1912960, 1996652, 2094848, 2281888, 2495815, 2607872, 2618560, 2852360, 2992640, 3259840, 3825920, 3993304, 4189696, 4563776, 4991630, 5215744, 5237120, 5704720, 6519680, 7651840, 7986608, 9127552, 9983260, 10474240, 11409440, 13039360, 15973216, 18255104, 19966520, 20948480, 22818880, 26078720, 31946432, 36510208, 39933040, 45637760, 63892864, 79866080, 91275520, 127785728, 159732160, 182551040, 255571456, 319464320, 638928640, 1277857280]

約数ペア:

[(1, 1277857280), (2, 638928640), (4, 319464320), (5, 255571456), (7, 182551040), (8, 159732160), (10, 127785728), (14, 91275520), (16, 79866080), (20, 63892864), (28, 45637760), (32, 39933040), (35, 36510208), (40, 31946432), (49, 26078720), (56, 22818880), (61, 20948480), (64, 19966520), (70, 18255104), (80, 15973216), (98, 13039360), (112, 11409440), (122, 10474240), (128, 9983260), (140, 9127552), (160, 7986608), (167, 7651840), (196, 6519680), (224, 5704720), (244, 5237120), (245, 5215744), (256, 4991630), (280, 4563776), (305, 4189696), (320, 3993304), (334, 3825920), (392, 3259840), (427, 2992640), (448, 2852360), (488, 2618560), (490, 2607872), (512, 2495815), (560, 2281888), (610, 2094848), (640, 1996652), (668, 1912960), (784, 1629920), (835, 1530368), (854, 1496320), (896, 1426180), (976, 1309280), (980, 1303936), (1120, 1140944), (1169, 1093120), (1220, 1047424), (1280, 998326), (1336, 956480), (1568, 814960), (1670, 765184), (1708, 748160), (1792, 713090), (1952, 654640), (1960, 651968), (2135, 598528), (2240, 570472), (2338, 546560), (2440, 523712), (2560, 499163), (2672, 478240), (2989, 427520), (3136, 407480), (3340, 382592), (3416, 374080), (3584, 356545), (3904, 327320), (3920, 325984), (4270, 299264), (4480, 285236), (4676, 273280), (4880, 261856), (5344, 239120), (5845, 218624), (5978, 213760), (6272, 203740), (6680, 191296), (6832, 187040), (7808, 163660), (7840, 162992), (8183, 156160), (8540, 149632), (8960, 142618), (9352, 136640), (9760, 130928), (10187, 125440), (10688, 119560), (11690, 109312), (11956, 106880), (12544, 101870), (13360, 95648), (13664, 93520), (14945, 85504), (15616, 81830), (15680, 81496), (16366, 78080), (17080, 74816), (17920, 71309), (18704, 68320), (19520, 65464), (20374, 62720), (21376, 59780), (23380, 54656), (23912, 53440), (25088, 50935), (26720, 47824), (27328, 46760), (29890, 42752), (31232, 40915), (31360, 40748), (32732, 39040), (34160, 37408)]