256487168

素因数分解:

$2^8\times 7^3\times {\mathrm{23}}^1\times {\mathrm{127}}^1$

素因数の和:187

約数の個数: 144

約数和(自身を含む): 627916800

約数和(自身を除く): 371429632

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 32, 46, 49, 56, 64, 92, 98, 112, 127, 128, 161, 184, 196, 224, 254, 256, 322, 343, 368, 392, 448, 508, 644, 686, 736, 784, 889, 896, 1016, 1127, 1288, 1372, 1472, 1568, 1778, 1792, 2032, 2254, 2576, 2744, 2921, 2944, 3136, 3556, 4064, 4508, 5152, 5488, 5842, 5888, 6223, 6272, 7112, 7889, 8128, 9016, 10304, 10976, 11684, 12446, 12544, 14224, 15778, 16256, 18032, 20447, 20608, 21952, 23368, 24892, 28448, 31556, 32512, 36064, 40894, 41216, 43561, 43904, 46736, 49784, 56896, 63112, 72128, 81788, 87122, 87808, 93472, 99568, 113792, 126224, 143129, 144256, 163576, 174244, 186944, 199136, 227584, 252448, 286258, 288512, 327152, 348488, 373888, 398272, 504896, 572516, 654304, 696976, 747776, 796544, 1001903, 1009792, 1145032, 1308608, 1393952, 1593088, 2003806, 2019584, 2290064, 2617216, 2787904, 4007612, 4580128, 5234432, 5575808, 8015224, 9160256, 11151616, 16030448, 18320512, 32060896, 36641024, 64121792, 128243584, 256487168]

約数ペア:

[(1, 256487168), (2, 128243584), (4, 64121792), (7, 36641024), (8, 32060896), (14, 18320512), (16, 16030448), (23, 11151616), (28, 9160256), (32, 8015224), (46, 5575808), (49, 5234432), (56, 4580128), (64, 4007612), (92, 2787904), (98, 2617216), (112, 2290064), (127, 2019584), (128, 2003806), (161, 1593088), (184, 1393952), (196, 1308608), (224, 1145032), (254, 1009792), (256, 1001903), (322, 796544), (343, 747776), (368, 696976), (392, 654304), (448, 572516), (508, 504896), (644, 398272), (686, 373888), (736, 348488), (784, 327152), (889, 288512), (896, 286258), (1016, 252448), (1127, 227584), (1288, 199136), (1372, 186944), (1472, 174244), (1568, 163576), (1778, 144256), (1792, 143129), (2032, 126224), (2254, 113792), (2576, 99568), (2744, 93472), (2921, 87808), (2944, 87122), (3136, 81788), (3556, 72128), (4064, 63112), (4508, 56896), (5152, 49784), (5488, 46736), (5842, 43904), (5888, 43561), (6223, 41216), (6272, 40894), (7112, 36064), (7889, 32512), (8128, 31556), (9016, 28448), (10304, 24892), (10976, 23368), (11684, 21952), (12446, 20608), (12544, 20447), (14224, 18032), (15778, 16256)]