256845312

素因数分解:

$2^9\times 3^2\times {\mathrm{139}}^1\times {\mathrm{401}}^1$

素因数の和:564

約数の個数: 120

約数和(自身を含む): 748467720

約数和(自身を除く): 491622408

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 64, 72, 96, 128, 139, 144, 192, 256, 278, 288, 384, 401, 417, 512, 556, 576, 768, 802, 834, 1112, 1152, 1203, 1251, 1536, 1604, 1668, 2224, 2304, 2406, 2502, 3208, 3336, 3609, 4448, 4608, 4812, 5004, 6416, 6672, 7218, 8896, 9624, 10008, 12832, 13344, 14436, 17792, 19248, 20016, 25664, 26688, 28872, 35584, 38496, 40032, 51328, 53376, 55739, 57744, 71168, 76992, 80064, 102656, 106752, 111478, 115488, 153984, 160128, 167217, 205312, 213504, 222956, 230976, 307968, 320256, 334434, 445912, 461952, 501651, 615936, 640512, 668868, 891824, 923904, 1003302, 1337736, 1783648, 1847808, 2006604, 2675472, 3567296, 4013208, 5350944, 7134592, 8026416, 10701888, 14269184, 16052832, 21403776, 28538368, 32105664, 42807552, 64211328, 85615104, 128422656, 256845312]

約数ペア:

[(1, 256845312), (2, 128422656), (3, 85615104), (4, 64211328), (6, 42807552), (8, 32105664), (9, 28538368), (12, 21403776), (16, 16052832), (18, 14269184), (24, 10701888), (32, 8026416), (36, 7134592), (48, 5350944), (64, 4013208), (72, 3567296), (96, 2675472), (128, 2006604), (139, 1847808), (144, 1783648), (192, 1337736), (256, 1003302), (278, 923904), (288, 891824), (384, 668868), (401, 640512), (417, 615936), (512, 501651), (556, 461952), (576, 445912), (768, 334434), (802, 320256), (834, 307968), (1112, 230976), (1152, 222956), (1203, 213504), (1251, 205312), (1536, 167217), (1604, 160128), (1668, 153984), (2224, 115488), (2304, 111478), (2406, 106752), (2502, 102656), (3208, 80064), (3336, 76992), (3609, 71168), (4448, 57744), (4608, 55739), (4812, 53376), (5004, 51328), (6416, 40032), (6672, 38496), (7218, 35584), (8896, 28872), (9624, 26688), (10008, 25664), (12832, 20016), (13344, 19248), (14436, 17792)]