Greatest Common Factor of 28, 19, 55, 84

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

• Greatest Common Factor of 28, 19, 55, 84 by common division method
• Greatest Common Factor of 28, 19, 55, 84 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 28

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

1,2,4,7,14,28

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

Greatest Common Factor

We found the factors 28,19,55,84 . The biggest common factor number is the GCF number.
So the greatest common factor 28,19,55,84 is 1.

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

• GCF of 38, 40, 13, 94
• GCF of 76, 78, 39, 45
• GCF of 16, 59, 84, 49
• GCF of 14, 56, 99, 67
• GCF of 95, 75, 91, 32

1. What is the GCF of 28, 19, 55, 84?

Answer: GCF of 28, 19, 55, 84 is 1.

2. How to Find the GCF of 28, 19, 55, 84

Answer: Greatest Common Factor(GCF) of 28, 19, 55, 84 = 1

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

Step 2: Then multiply all the prime factors GCF(28, 19, 55, 84) = 1.