20172656

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 47996928

約数和(自身を除く): 27824272

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 41, 46, 56, 82, 92, 112, 161, 164, 184, 191, 287, 322, 328, 368, 382, 574, 644, 656, 764, 943, 1148, 1288, 1337, 1528, 1886, 2296, 2576, 2674, 3056, 3772, 4393, 4592, 5348, 6601, 7544, 7831, 8786, 10696, 13202, 15088, 15662, 17572, 21392, 26404, 30751, 31324, 35144, 52808, 54817, 61502, 62648, 70288, 105616, 109634, 123004, 125296, 180113, 219268, 246008, 360226, 438536, 492016, 720452, 877072, 1260791, 1440904, 2521582, 2881808, 5043164, 10086328, 20172656]

約数ペア:

[(1, 20172656), (2, 10086328), (4, 5043164), (7, 2881808), (8, 2521582), (14, 1440904), (16, 1260791), (23, 877072), (28, 720452), (41, 492016), (46, 438536), (56, 360226), (82, 246008), (92, 219268), (112, 180113), (161, 125296), (164, 123004), (184, 109634), (191, 105616), (287, 70288), (322, 62648), (328, 61502), (368, 54817), (382, 52808), (574, 35144), (644, 31324), (656, 30751), (764, 26404), (943, 21392), (1148, 17572), (1288, 15662), (1337, 15088), (1528, 13202), (1886, 10696), (2296, 8786), (2576, 7831), (2674, 7544), (3056, 6601), (3772, 5348), (4393, 4592)]