20704488

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{491}}^1$

素因数の和:758

約数の個数: 64

約数和(自身を含む): 59512320

約数和(自身を除く): 38807832

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 251, 491, 502, 753, 982, 1004, 1473, 1506, 1757, 1964, 2008, 2946, 3012, 3437, 3514, 3928, 5271, 5892, 6024, 6874, 7028, 10311, 10542, 11784, 13748, 14056, 20622, 21084, 27496, 41244, 42168, 82488, 123241, 246482, 369723, 492964, 739446, 862687, 985928, 1478892, 1725374, 2588061, 2957784, 3450748, 5176122, 6901496, 10352244, 20704488]

約数ペア:

[(1, 20704488), (2, 10352244), (3, 6901496), (4, 5176122), (6, 3450748), (7, 2957784), (8, 2588061), (12, 1725374), (14, 1478892), (21, 985928), (24, 862687), (28, 739446), (42, 492964), (56, 369723), (84, 246482), (168, 123241), (251, 82488), (491, 42168), (502, 41244), (753, 27496), (982, 21084), (1004, 20622), (1473, 14056), (1506, 13748), (1757, 11784), (1964, 10542), (2008, 10311), (2946, 7028), (3012, 6874), (3437, 6024), (3514, 5892), (3928, 5271)]