Greatest Common Factor of 21, 675, 320

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

• Greatest Common Factor of 21, 675, 320 by common division method
• Greatest Common Factor of 21, 675, 320 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 675

List of positive integer factors of 675 that divides 675 without a remainder.

1,3,5,9,15,25,27,45,75,135,225,675

Factors of 320

List of positive integer factors of 320 that divides 320 without a remainder.

1,2,4,5,8,10,16,20,32,40,64,80,160,320

Greatest Common Factor

We found the factors 21,675,320 . The biggest common factor number is the GCF number.
So the greatest common factor 21,675,320 is 1.

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

• GCF of 77, 287, 152
• GCF of 33, 753, 650
• GCF of 26, 784, 542
• GCF of 84, 776, 664
• GCF of 61, 770, 622

1. What is the GCF of 21, 675, 320?

Answer: GCF of 21, 675, 320 is 1.

2. How to Find the GCF of 21, 675, 320

Answer: Greatest Common Factor(GCF) of 21, 675, 320 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 675, 320) = 1.