There are no COMMON factors]between '9' & '25'. '9' has the factors os 3, & 9. '25 has the factors of 5, & 25/
The COMMON factors of 9 depend upon the OTHER numbers with which 9 has factors in COMMON. However, they will be one or more of the factors of 9 which are 1, 3, 9.
Since 9 is a factor of 36, all of its factors are common.
Since 9 is a factor of 27, all of its factors are common.
Since 9 is a factor of 81, all of its factors are common.
All multiples of 9 share common factors with 9.
Since 9 is a factor of 18, all of its factors are common.
Since 9 is a factor of 27, all of its factors are common.
1, 3 and 9.
Since 9 is a factor of 63, all of its factors are common.
The common factors of 27 and 45 are 1, 3, and 9. The greatest common factor of 27 and 45 is 9. One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them. The factors of 27 are 1, 3, 9, and 27. The factors of 45 are 1, 3, 5, 9, 15, and 45. The common factors are 1,3, and 9. Therefore, the greatest common factor is 9. The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together. To then obtain the common factors, list all the factors of the greatest common factor. The prime factors of 27 are 3, 3, and 3. The prime factors of 45 are 3, 3, and 5. The prime factors in common are 3 and 3, so the greatest common factor is 3 x 3 = 9.
The common factors of 6, 21, and 39 are 1 and 3