Common factor is 1.
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The common factors of 7 and 49 are 1 and 7.
Factors of 49: 1, 7, and 49Factors of 64: 1, 2, 4, 8, 16, 32, and 64The only common factor of 49 and 64 is 1 .
7
The factors of 14 are: 1, 2, 7, 14The factors of 21 are: 1, 3, 7, 21The factors of 49 are: 1, 7, 49The common factors are: 1, 7
A factor is a number that divides into another number. Factors of 19 are 1 and 19. Factors of 49 are 1, 7, and 49. Therefore, 1 is the greatest common factor.