Greatest Common Factor of 21, 61, 34, 560

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

• Greatest Common Factor of 21, 61, 34, 560 by common division method
• Greatest Common Factor of 21, 61, 34, 560 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 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

Factors of 34

List of positive integer factors of 34 that divides 34 without a remainder.

1,2,17,34

Factors of 560

List of positive integer factors of 560 that divides 560 without a remainder.

1,2,4,5,7,8,10,14,16,20,28,35,40,56,70,80,112,140,280,560

Greatest Common Factor

We found the factors 21,61,34,560 . The biggest common factor number is the GCF number.
So the greatest common factor 21,61,34,560 is 1.

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

• GCF of 65, 96, 55, 282
• GCF of 70, 61, 32, 371
• GCF of 46, 87, 16, 393
• GCF of 46, 13, 70, 237
• GCF of 91, 56, 28, 981

1. What is the GCF of 21, 61, 34, 560?

Answer: GCF of 21, 61, 34, 560 is 1.

2. How to Find the GCF of 21, 61, 34, 560

Answer: Greatest Common Factor(GCF) of 21, 61, 34, 560 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 61, 34, 560) = 1.