640958976

素因数分解:

$2^9\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{641}}^1$

素因数の和:703

約数の個数: 240

約数和(自身を含む): 2185717248

約数和(自身を除く): 1544758272

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 31, 32, 36, 42, 48, 56, 62, 63, 64, 72, 84, 93, 96, 112, 124, 126, 128, 144, 168, 186, 192, 217, 224, 248, 252, 256, 279, 288, 336, 372, 384, 434, 448, 496, 504, 512, 558, 576, 641, 651, 672, 744, 768, 868, 896, 992, 1008, 1116, 1152, 1282, 1302, 1344, 1488, 1536, 1736, 1792, 1923, 1953, 1984, 2016, 2232, 2304, 2564, 2604, 2688, 2976, 3472, 3584, 3846, 3906, 3968, 4032, 4464, 4487, 4608, 5128, 5208, 5376, 5769, 5952, 6944, 7692, 7812, 7936, 8064, 8928, 8974, 10256, 10416, 10752, 11538, 11904, 13461, 13888, 15384, 15624, 15872, 16128, 17856, 17948, 19871, 20512, 20832, 23076, 23808, 26922, 27776, 30768, 31248, 32256, 35712, 35896, 39742, 40383, 41024, 41664, 46152, 47616, 53844, 55552, 59613, 61536, 62496, 71424, 71792, 79484, 80766, 82048, 83328, 92304, 107688, 111104, 119226, 123072, 124992, 139097, 142848, 143584, 158968, 161532, 164096, 166656, 178839, 184608, 215376, 238452, 246144, 249984, 278194, 287168, 317936, 323064, 328192, 333312, 357678, 369216, 417291, 430752, 476904, 492288, 499968, 556388, 574336, 635872, 646128, 715356, 738432, 834582, 861504, 953808, 984576, 999936, 1112776, 1148672, 1251873, 1271744, 1292256, 1430712, 1476864, 1669164, 1723008, 1907616, 2225552, 2297344, 2503746, 2543488, 2584512, 2861424, 2953728, 3338328, 3446016, 3815232, 4451104, 5007492, 5086976, 5169024, 5722848, 6676656, 6892032, 7630464, 8902208, 10014984, 10173952, 10338048, 11445696, 13353312, 15260928, 17804416, 20029968, 20676096, 22891392, 26706624, 30521856, 35608832, 40059936, 45782784, 53413248, 71217664, 80119872, 91565568, 106826496, 160239744, 213652992, 320479488, 640958976]

約数ペア:

[(1, 640958976), (2, 320479488), (3, 213652992), (4, 160239744), (6, 106826496), (7, 91565568), (8, 80119872), (9, 71217664), (12, 53413248), (14, 45782784), (16, 40059936), (18, 35608832), (21, 30521856), (24, 26706624), (28, 22891392), (31, 20676096), (32, 20029968), (36, 17804416), (42, 15260928), (48, 13353312), (56, 11445696), (62, 10338048), (63, 10173952), (64, 10014984), (72, 8902208), (84, 7630464), (93, 6892032), (96, 6676656), (112, 5722848), (124, 5169024), (126, 5086976), (128, 5007492), (144, 4451104), (168, 3815232), (186, 3446016), (192, 3338328), (217, 2953728), (224, 2861424), (248, 2584512), (252, 2543488), (256, 2503746), (279, 2297344), (288, 2225552), (336, 1907616), (372, 1723008), (384, 1669164), (434, 1476864), (448, 1430712), (496, 1292256), (504, 1271744), (512, 1251873), (558, 1148672), (576, 1112776), (641, 999936), (651, 984576), (672, 953808), (744, 861504), (768, 834582), (868, 738432), (896, 715356), (992, 646128), (1008, 635872), (1116, 574336), (1152, 556388), (1282, 499968), (1302, 492288), (1344, 476904), (1488, 430752), (1536, 417291), (1736, 369216), (1792, 357678), (1923, 333312), (1953, 328192), (1984, 323064), (2016, 317936), (2232, 287168), (2304, 278194), (2564, 249984), (2604, 246144), (2688, 238452), (2976, 215376), (3472, 184608), (3584, 178839), (3846, 166656), (3906, 164096), (3968, 161532), (4032, 158968), (4464, 143584), (4487, 142848), (4608, 139097), (5128, 124992), (5208, 123072), (5376, 119226), (5769, 111104), (5952, 107688), (6944, 92304), (7692, 83328), (7812, 82048), (7936, 80766), (8064, 79484), (8928, 71792), (8974, 71424), (10256, 62496), (10416, 61536), (10752, 59613), (11538, 55552), (11904, 53844), (13461, 47616), (13888, 46152), (15384, 41664), (15624, 41024), (15872, 40383), (16128, 39742), (17856, 35896), (17948, 35712), (19871, 32256), (20512, 31248), (20832, 30768), (23076, 27776), (23808, 26922)]