261427712

素因数分解:

$2^9\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:250

約数の個数: 160

約数和(自身を含む): 667290624

約数和(自身を除く): 405862912

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 31, 32, 52, 56, 62, 64, 91, 104, 112, 124, 128, 181, 182, 208, 217, 224, 248, 256, 362, 364, 403, 416, 434, 448, 496, 512, 724, 728, 806, 832, 868, 896, 992, 1267, 1448, 1456, 1612, 1664, 1736, 1792, 1984, 2353, 2534, 2821, 2896, 2912, 3224, 3328, 3472, 3584, 3968, 4706, 5068, 5611, 5642, 5792, 5824, 6448, 6656, 6944, 7936, 9412, 10136, 11222, 11284, 11584, 11648, 12896, 13888, 15872, 16471, 18824, 20272, 22444, 22568, 23168, 23296, 25792, 27776, 32942, 37648, 39277, 40544, 44888, 45136, 46336, 46592, 51584, 55552, 65884, 72943, 75296, 78554, 81088, 89776, 90272, 92672, 103168, 111104, 131768, 145886, 150592, 157108, 162176, 179552, 180544, 206336, 263536, 291772, 301184, 314216, 324352, 359104, 361088, 510601, 527072, 583544, 602368, 628432, 648704, 718208, 722176, 1021202, 1054144, 1167088, 1204736, 1256864, 1436416, 1444352, 2042404, 2108288, 2334176, 2513728, 2872832, 4084808, 4216576, 4668352, 5027456, 8169616, 8433152, 9336704, 10054912, 16339232, 18673408, 20109824, 32678464, 37346816, 65356928, 130713856, 261427712]

約数ペア:

[(1, 261427712), (2, 130713856), (4, 65356928), (7, 37346816), (8, 32678464), (13, 20109824), (14, 18673408), (16, 16339232), (26, 10054912), (28, 9336704), (31, 8433152), (32, 8169616), (52, 5027456), (56, 4668352), (62, 4216576), (64, 4084808), (91, 2872832), (104, 2513728), (112, 2334176), (124, 2108288), (128, 2042404), (181, 1444352), (182, 1436416), (208, 1256864), (217, 1204736), (224, 1167088), (248, 1054144), (256, 1021202), (362, 722176), (364, 718208), (403, 648704), (416, 628432), (434, 602368), (448, 583544), (496, 527072), (512, 510601), (724, 361088), (728, 359104), (806, 324352), (832, 314216), (868, 301184), (896, 291772), (992, 263536), (1267, 206336), (1448, 180544), (1456, 179552), (1612, 162176), (1664, 157108), (1736, 150592), (1792, 145886), (1984, 131768), (2353, 111104), (2534, 103168), (2821, 92672), (2896, 90272), (2912, 89776), (3224, 81088), (3328, 78554), (3472, 75296), (3584, 72943), (3968, 65884), (4706, 55552), (5068, 51584), (5611, 46592), (5642, 46336), (5792, 45136), (5824, 44888), (6448, 40544), (6656, 39277), (6944, 37648), (7936, 32942), (9412, 27776), (10136, 25792), (11222, 23296), (11284, 23168), (11584, 22568), (11648, 22444), (12896, 20272), (13888, 18824), (15872, 16471)]