21199416

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{491}}^1$

素因数の和:764

約数の個数: 64

約数和(自身を含む): 60929280

約数和(自身を除く): 39729864

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 257, 491, 514, 771, 982, 1028, 1473, 1542, 1799, 1964, 2056, 2946, 3084, 3437, 3598, 3928, 5397, 5892, 6168, 6874, 7196, 10311, 10794, 11784, 13748, 14392, 20622, 21588, 27496, 41244, 43176, 82488, 126187, 252374, 378561, 504748, 757122, 883309, 1009496, 1514244, 1766618, 2649927, 3028488, 3533236, 5299854, 7066472, 10599708, 21199416]

約数ペア:

[(1, 21199416), (2, 10599708), (3, 7066472), (4, 5299854), (6, 3533236), (7, 3028488), (8, 2649927), (12, 1766618), (14, 1514244), (21, 1009496), (24, 883309), (28, 757122), (42, 504748), (56, 378561), (84, 252374), (168, 126187), (257, 82488), (491, 43176), (514, 41244), (771, 27496), (982, 21588), (1028, 20622), (1473, 14392), (1542, 13748), (1799, 11784), (1964, 10794), (2056, 10311), (2946, 7196), (3084, 6874), (3437, 6168), (3598, 5892), (3928, 5397)]