Greatest Common Factor of 21, 38, 76, 47

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

• Greatest Common Factor of 21, 38, 76, 47 by common division method
• Greatest Common Factor of 21, 38, 76, 47 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Greatest Common Factor

We found the factors 21,38,76,47 . The biggest common factor number is the GCF number.
So the greatest common factor 21,38,76,47 is 1.

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

• GCF of 54, 38, 27, 63
• GCF of 60, 49, 10, 56
• GCF of 45, 34, 53, 82
• GCF of 58, 48, 76, 44
• GCF of 71, 36, 23, 94

1. What is the GCF of 21, 38, 76, 47?

Answer: GCF of 21, 38, 76, 47 is 1.

2. How to Find the GCF of 21, 38, 76, 47

Answer: Greatest Common Factor(GCF) of 21, 38, 76, 47 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 38, 76, 47) = 1.