GCF of two or more numbers Calculator allows you to quickly calculate the GCF of 28, 42, 49 i.e. 7 largest integer that divides all the numbers equally.

Greatest common factor (GCF) of 28, 42, 49 is **7**.

GCF(28, 42, 49) = 7

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

- Greatest Common Factor of 28, 42, 49 by common division method
- Greatest Common Factor of 28, 42, 49 with matching the biggest common factor

7 | 28, 42, 49 |

4, 6, 7 |

∴ So the GCF of the given numbers is 7 = 7

**Factors of 28**

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

**Factors of 42**

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

**Factors of 49**

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

**Greatest Common Factor**

We found the factors 28,42,49 . The biggest common factor number is the **GCF** number.

So the **greatest common factor 28,42,49 ** is **7**.

Here are some samples of GCF of two or more Numbers calculations.

1. What is the GCF of 28, 42, 49?

Answer: GCF of 28, 42, 49 is 7.

2. How to Find the GCF of 28, 42, 49

Answer: Greatest Common Factor(GCF) of 28, 42, 49 = 7

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(28, 42, 49) = 7.