There are no0 common factors apart from 1
28 has the most factors: 6 Factors for 25 are: 1, 5, 25 Factors for 26 are: 1, 2, 13, 26 Factors for 27 are: 1, 3, 9, 27 Factors for 28 are: 1, 2, 4, 7, 14, 28 Factors for 29 are: 1, 29
28 is a composite number because it has more than two factors but 29 is a prime number because it has only two factors.
It remains 28/29 because it can't be simplified any further
1, 2, 29, 58
28 is a multiple of 14, so it can be proven that any factor of 14 must be a factor of 28.
Any of their factors.
512 = 29 or 768 = 28*3 have 9 prime factors each.
1, 2, 29 and 58
1, 3, 29, 87
The factors of 29 are: 1, 29
28 * 29 = 812
Any multiple of 168