123478656

素因数分解:

$2^7\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{647}}^1$

素因数の和:742

約数の個数: 128

約数和(自身を含む): 380712960

約数和(自身を除く): 257234304

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 64, 71, 84, 96, 112, 128, 142, 168, 192, 213, 224, 284, 336, 384, 426, 448, 497, 568, 647, 672, 852, 896, 994, 1136, 1294, 1344, 1491, 1704, 1941, 1988, 2272, 2588, 2688, 2982, 3408, 3882, 3976, 4529, 4544, 5176, 5964, 6816, 7764, 7952, 9058, 9088, 10352, 11928, 13587, 13632, 15528, 15904, 18116, 20704, 23856, 27174, 27264, 31056, 31808, 36232, 41408, 45937, 47712, 54348, 62112, 63616, 72464, 82816, 91874, 95424, 108696, 124224, 137811, 144928, 183748, 190848, 217392, 248448, 275622, 289856, 321559, 367496, 434784, 551244, 579712, 643118, 734992, 869568, 964677, 1102488, 1286236, 1469984, 1739136, 1929354, 2204976, 2572472, 2939968, 3858708, 4409952, 5144944, 5879936, 7717416, 8819904, 10289888, 15434832, 17639808, 20579776, 30869664, 41159552, 61739328, 123478656]

約数ペア:

[(1, 123478656), (2, 61739328), (3, 41159552), (4, 30869664), (6, 20579776), (7, 17639808), (8, 15434832), (12, 10289888), (14, 8819904), (16, 7717416), (21, 5879936), (24, 5144944), (28, 4409952), (32, 3858708), (42, 2939968), (48, 2572472), (56, 2204976), (64, 1929354), (71, 1739136), (84, 1469984), (96, 1286236), (112, 1102488), (128, 964677), (142, 869568), (168, 734992), (192, 643118), (213, 579712), (224, 551244), (284, 434784), (336, 367496), (384, 321559), (426, 289856), (448, 275622), (497, 248448), (568, 217392), (647, 190848), (672, 183748), (852, 144928), (896, 137811), (994, 124224), (1136, 108696), (1294, 95424), (1344, 91874), (1491, 82816), (1704, 72464), (1941, 63616), (1988, 62112), (2272, 54348), (2588, 47712), (2688, 45937), (2982, 41408), (3408, 36232), (3882, 31808), (3976, 31056), (4529, 27264), (4544, 27174), (5176, 23856), (5964, 20704), (6816, 18116), (7764, 15904), (7952, 15528), (9058, 13632), (9088, 13587), (10352, 11928)]