Greatest Common Factor of 21, 28, 93, 653

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

• Greatest Common Factor of 21, 28, 93, 653 by common division method
• Greatest Common Factor of 21, 28, 93, 653 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 28

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

1,2,4,7,14,28

Factors of 93

List of positive integer factors of 93 that divides 93 without a remainder.

1,3,31,93

Factors of 653

List of positive integer factors of 653 that divides 653 without a remainder.

1,653

Greatest Common Factor

We found the factors 21,28,93,653 . The biggest common factor number is the GCF number.
So the greatest common factor 21,28,93,653 is 1.

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

• GCF of 63, 34, 43, 463
• GCF of 20, 39, 19, 727
• GCF of 48, 35, 18, 365
• GCF of 35, 21, 95, 356
• GCF of 91, 34, 53, 687

1. What is the GCF of 21, 28, 93, 653?

Answer: GCF of 21, 28, 93, 653 is 1.

2. How to Find the GCF of 21, 28, 93, 653

Answer: Greatest Common Factor(GCF) of 21, 28, 93, 653 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 28, 93, 653) = 1.