441 = 32 x 72
35 x 7 = 1701
23 x 32 x 11 = 792
22 x 52 x 13 = 1300
2^2 x 5^2 x 13
The common factors of 220 and 284 are the numbers that can evenly divide both 220 and 284 without leaving a remainder. To find the common factors, we first need to find the prime factorization of each number. The prime factorization of 220 is 2^2 * 5 * 11, and the prime factorization of 284 is 2^2 * 71. The common factors of 220 and 284 are the numbers that appear in both factorizations, which are 2 and 4.
22*72 = 196
2^2 = 4
75 = 3 x 52
22 x 32 = 36
2 x 72 = 98
35 x 7 = 1701
245 = 51 x 72
22*52*43 = 4300
22 x 52 x 13
22 x 52 x 13 = 1300
23 x 32 x 11 = 792
23 x 32 x 17 = 1224