Study the following examples and you can study how to find common factors of two or more numbers:
Example 1: Find common factors of 14 and 24
Solution: Find factors of 14 & 24 and we get:
Factors of 14 = 1, 2, 7 & 14
Factors of 24 = 1, 2, 3, 4, 6, 8, 12 & 24
We can observe that 1 and 2 are factors of both 14 and 24.
Therefore, 1 and 2 are known as common factors of 14 and 24.
Example 2: Find common factors of 15, 25 and 35
Solution: Find factors of 15, 25 & 35 and we get:
Factors of 15 = 1 , 3, 5 & 15
Factors of 25 = 1, 5 & 25
Factors of 24 = 1, 5 , 7 & 35
We can observe that 1 and 5 are factors of 15, 25 and 35
Therefore, 1 and 5 are known as common factors of 15, 25 and 35

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