Let us list the factors of 28.
28 = 2*2*7 = 4 * 7.
4 + 7 = 11
The two factors are 4 and 7.
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The factors of 12 are:
1, 2, 3, 4, 6, 12
The factors of 28 are:
1, 2, 4, 7, 14, 28
Add them up.
The factors of 22 are 1, 2, 11, and 22The factors of 66 are 1, 2, 3, 6, 11, 22, 33, and 66
The factors of 22 are: 1, 2, 11, and 22.The prime factors of 22 are: 2 and 11.The factors of 99 are: 1, 3, 9, 11, 33, and 99.The prime factors of 99 are: 3 and 11.
The factors of 22 are 1, 2, 11, and 22. The factors of 121 are 1, 11, and 121
Four factors: 1 2 11 22.
The factors of 22 are: 1, 2, 11, 22The factors of 77 are: 1, 7, 11, 77The common factors are: 1, 11Factors of 22 and 77 are 1 and 11. Since 22 x 1 = 22, 77 x 1 = 77 and 11 x 2 = 22, 11 x 7 = 77.