3, 9, and 27 are the shared factors The shared composite factors will have the same prime factors. You just need to find the common prime factors and then the composites of those are the composite factors. Found this by looking at the prime factors first of 486: 2*3*3*3*3*3 Then of 216297 3*3*3*8011 I'm not sure if 8011 is prime, but it doesn't really matter - the remaining prime factors of 486 (2, 3, 3) don't go in to it. The common prime factors are 3, 3, 3 so the shared composites are the various multiples, in this case, 3,9, and 27.
composite
The factors of 486 are 1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, and 486.
The common factors of 486 and 6 are 1, 2, 3, and 6.
486 = 2 x 35
The factors of 486 are 1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, and 486. The distinct prime factors of 486 are 2 and 3. The prime factorization of 486 is 2 x 3 x 3 x 3 x 3 x 3 or, in index form, 2 x 3^5
The factors of 486 are 1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, and 486. 1 x 486 = 486; 2 x 243 = 486; 3 x 162 = 486; 6 x 81 = 486; etc.
The composite factors of 75 are 15,25 and 75.
Composite because it has more factors than just 1 and itself. The factors are 1,2 3,6,9,18.
The composite factors of 22 are 1 and 22.
The composite factors of 45 are 9, 15 and 45.
The factors that are composite numbers, those that have more than two factors.
1 and 2, the GCF