256791808

素因数分解:

$2^8\times 7^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 643745536

約数和(自身を除く): 386953728

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 73, 91, 104, 112, 128, 146, 151, 182, 208, 224, 256, 292, 302, 364, 416, 448, 511, 584, 604, 728, 832, 896, 949, 1022, 1057, 1168, 1208, 1456, 1664, 1792, 1898, 1963, 2044, 2114, 2336, 2416, 2912, 3328, 3796, 3926, 4088, 4228, 4672, 4832, 5824, 6643, 7592, 7852, 8176, 8456, 9344, 9664, 11023, 11648, 13286, 13741, 15184, 15704, 16352, 16912, 18688, 19328, 22046, 23296, 26572, 27482, 30368, 31408, 32704, 33824, 38656, 44092, 53144, 54964, 60736, 62816, 65408, 67648, 77161, 88184, 106288, 109928, 121472, 125632, 130816, 135296, 143299, 154322, 176368, 212576, 219856, 242944, 251264, 270592, 286598, 308644, 352736, 425152, 439712, 502528, 573196, 617288, 705472, 850304, 879424, 1003093, 1146392, 1234576, 1410944, 1700608, 1758848, 2006186, 2292784, 2469152, 2821888, 3517696, 4012372, 4585568, 4938304, 8024744, 9171136, 9876608, 16049488, 18342272, 19753216, 32098976, 36684544, 64197952, 128395904, 256791808]

約数ペア:

[(1, 256791808), (2, 128395904), (4, 64197952), (7, 36684544), (8, 32098976), (13, 19753216), (14, 18342272), (16, 16049488), (26, 9876608), (28, 9171136), (32, 8024744), (52, 4938304), (56, 4585568), (64, 4012372), (73, 3517696), (91, 2821888), (104, 2469152), (112, 2292784), (128, 2006186), (146, 1758848), (151, 1700608), (182, 1410944), (208, 1234576), (224, 1146392), (256, 1003093), (292, 879424), (302, 850304), (364, 705472), (416, 617288), (448, 573196), (511, 502528), (584, 439712), (604, 425152), (728, 352736), (832, 308644), (896, 286598), (949, 270592), (1022, 251264), (1057, 242944), (1168, 219856), (1208, 212576), (1456, 176368), (1664, 154322), (1792, 143299), (1898, 135296), (1963, 130816), (2044, 125632), (2114, 121472), (2336, 109928), (2416, 106288), (2912, 88184), (3328, 77161), (3796, 67648), (3926, 65408), (4088, 62816), (4228, 60736), (4672, 54964), (4832, 53144), (5824, 44092), (6643, 38656), (7592, 33824), (7852, 32704), (8176, 31408), (8456, 30368), (9344, 27482), (9664, 26572), (11023, 23296), (11648, 22046), (13286, 19328), (13741, 18688), (15184, 16912), (15704, 16352)]