Answer: The factors of 28 are: 1 2 4 7 14 28 The prime factors are: 2 x 2 x 7
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By adding up all the numbers in the group and dividing by the number of numbers in the group.
1 is a common factor of all numbers.
All numbers that are the square of primes have exactly 3 factors.
The squares of all prime numbers above 2 have exactly 3 factors.
Yes.all counting numbers Have factor.