256512256

素因数分解:

$2^8\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^2$

素因数の和:78

約数の個数: 243

約数和(自身を含む): 708922053

約数和(自身を除く): 452409797

約数列:

[1, 2, 4, 7, 8, 11, 13, 14, 16, 22, 26, 28, 32, 44, 49, 52, 56, 64, 77, 88, 91, 98, 104, 112, 121, 128, 143, 154, 169, 176, 182, 196, 208, 224, 242, 256, 286, 308, 338, 352, 364, 392, 416, 448, 484, 539, 572, 616, 637, 676, 704, 728, 784, 832, 847, 896, 968, 1001, 1078, 1144, 1183, 1232, 1274, 1352, 1408, 1456, 1568, 1573, 1664, 1694, 1792, 1859, 1936, 2002, 2156, 2288, 2366, 2464, 2548, 2704, 2816, 2912, 3136, 3146, 3328, 3388, 3718, 3872, 4004, 4312, 4576, 4732, 4928, 5096, 5408, 5824, 5929, 6272, 6292, 6776, 7007, 7436, 7744, 8008, 8281, 8624, 9152, 9464, 9856, 10192, 10816, 11011, 11648, 11858, 12544, 12584, 13013, 13552, 14014, 14872, 15488, 16016, 16562, 17248, 18304, 18928, 19712, 20384, 20449, 21632, 22022, 23296, 23716, 25168, 26026, 27104, 28028, 29744, 30976, 32032, 33124, 34496, 36608, 37856, 40768, 40898, 43264, 44044, 47432, 50336, 52052, 54208, 56056, 59488, 64064, 66248, 68992, 75712, 77077, 81536, 81796, 88088, 91091, 94864, 100672, 104104, 108416, 112112, 118976, 128128, 132496, 137984, 143143, 151424, 154154, 163072, 163592, 176176, 182182, 189728, 201344, 208208, 216832, 224224, 237952, 256256, 264992, 286286, 302848, 308308, 327184, 352352, 364364, 379456, 402688, 416416, 448448, 475904, 529984, 572572, 616616, 654368, 704704, 728728, 758912, 832832, 896896, 1002001, 1059968, 1145144, 1233232, 1308736, 1409408, 1457456, 1517824, 1665664, 1793792, 2004002, 2119936, 2290288, 2466464, 2617472, 2818816, 2914912, 3331328, 4008004, 4580576, 4932928, 5234944, 5829824, 8016008, 9161152, 9865856, 11659648, 16032016, 18322304, 19731712, 23319296, 32064032, 36644608, 64128064, 128256128, 256512256]

約数ペア:

[(1, 256512256), (2, 128256128), (4, 64128064), (7, 36644608), (8, 32064032), (11, 23319296), (13, 19731712), (14, 18322304), (16, 16032016), (22, 11659648), (26, 9865856), (28, 9161152), (32, 8016008), (44, 5829824), (49, 5234944), (52, 4932928), (56, 4580576), (64, 4008004), (77, 3331328), (88, 2914912), (91, 2818816), (98, 2617472), (104, 2466464), (112, 2290288), (121, 2119936), (128, 2004002), (143, 1793792), (154, 1665664), (169, 1517824), (176, 1457456), (182, 1409408), (196, 1308736), (208, 1233232), (224, 1145144), (242, 1059968), (256, 1002001), (286, 896896), (308, 832832), (338, 758912), (352, 728728), (364, 704704), (392, 654368), (416, 616616), (448, 572572), (484, 529984), (539, 475904), (572, 448448), (616, 416416), (637, 402688), (676, 379456), (704, 364364), (728, 352352), (784, 327184), (832, 308308), (847, 302848), (896, 286286), (968, 264992), (1001, 256256), (1078, 237952), (1144, 224224), (1183, 216832), (1232, 208208), (1274, 201344), (1352, 189728), (1408, 182182), (1456, 176176), (1568, 163592), (1573, 163072), (1664, 154154), (1694, 151424), (1792, 143143), (1859, 137984), (1936, 132496), (2002, 128128), (2156, 118976), (2288, 112112), (2366, 108416), (2464, 104104), (2548, 100672), (2704, 94864), (2816, 91091), (2912, 88088), (3136, 81796), (3146, 81536), (3328, 77077), (3388, 75712), (3718, 68992), (3872, 66248), (4004, 64064), (4312, 59488), (4576, 56056), (4732, 54208), (4928, 52052), (5096, 50336), (5408, 47432), (5824, 44044), (5929, 43264), (6272, 40898), (6292, 40768), (6776, 37856), (7007, 36608), (7436, 34496), (7744, 33124), (8008, 32032), (8281, 30976), (8624, 29744), (9152, 28028), (9464, 27104), (9856, 26026), (10192, 25168), (10816, 23716), (11011, 23296), (11648, 22022), (11858, 21632), (12544, 20449), (12584, 20384), (13013, 19712), (13552, 18928), (14014, 18304), (14872, 17248), (15488, 16562)]