257260864

素因数分解:

$2^6\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1987}}^1$

素因数の和:2040

約数の個数: 84

約数和(自身を含む): 620081056

約数和(自身を除く): 362820192

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 32, 34, 56, 64, 68, 112, 119, 136, 224, 238, 272, 289, 448, 476, 544, 578, 952, 1088, 1156, 1904, 1987, 2023, 2312, 3808, 3974, 4046, 4624, 7616, 7948, 8092, 9248, 13909, 15896, 16184, 18496, 27818, 31792, 32368, 33779, 55636, 63584, 64736, 67558, 111272, 127168, 129472, 135116, 222544, 236453, 270232, 445088, 472906, 540464, 574243, 890176, 945812, 1080928, 1148486, 1891624, 2161856, 2296972, 3783248, 4019701, 4593944, 7566496, 8039402, 9187888, 15132992, 16078804, 18375776, 32157608, 36751552, 64315216, 128630432, 257260864]

約数ペア:

[(1, 257260864), (2, 128630432), (4, 64315216), (7, 36751552), (8, 32157608), (14, 18375776), (16, 16078804), (17, 15132992), (28, 9187888), (32, 8039402), (34, 7566496), (56, 4593944), (64, 4019701), (68, 3783248), (112, 2296972), (119, 2161856), (136, 1891624), (224, 1148486), (238, 1080928), (272, 945812), (289, 890176), (448, 574243), (476, 540464), (544, 472906), (578, 445088), (952, 270232), (1088, 236453), (1156, 222544), (1904, 135116), (1987, 129472), (2023, 127168), (2312, 111272), (3808, 67558), (3974, 64736), (4046, 63584), (4624, 55636), (7616, 33779), (7948, 32368), (8092, 31792), (9248, 27818), (13909, 18496), (15896, 16184)]