Greatest Common Factor of 84, 47, 81, 561

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

• Greatest Common Factor of 84, 47, 81, 561 by common division method
• Greatest Common Factor of 84, 47, 81, 561 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 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

Factors of 47

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

1,47

Factors of 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Greatest Common Factor

We found the factors 84,47,81,561 . The biggest common factor number is the GCF number.
So the greatest common factor 84,47,81,561 is 1.

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

• GCF of 65, 91, 32, 365
• GCF of 64, 42, 43, 978
• GCF of 22, 76, 41, 644
• GCF of 90, 61, 33, 612
• GCF of 42, 58, 89, 325

1. What is the GCF of 84, 47, 81, 561?

Answer: GCF of 84, 47, 81, 561 is 1.

2. How to Find the GCF of 84, 47, 81, 561

Answer: Greatest Common Factor(GCF) of 84, 47, 81, 561 = 1

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

Step 2: Then multiply all the prime factors GCF(84, 47, 81, 561) = 1.