Greatest Common Factor of 81, 21, 35, 749

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

• Greatest Common Factor of 81, 21, 35, 749 by common division method
• Greatest Common Factor of 81, 21, 35, 749 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 81

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

1,3,9,27,81

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 35

List of positive integer factors of 35 that divides 35 without a remainder.

1,5,7,35

Factors of 749

List of positive integer factors of 749 that divides 749 without a remainder.

1,7,107,749

Greatest Common Factor

We found the factors 81,21,35,749 . The biggest common factor number is the GCF number.
So the greatest common factor 81,21,35,749 is 1.

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

• GCF of 24, 14, 15, 846
• GCF of 88, 67, 53, 274
• GCF of 14, 89, 41, 737
• GCF of 31, 31, 92, 756
• GCF of 68, 73, 38, 976

1. What is the GCF of 81, 21, 35, 749?

Answer: GCF of 81, 21, 35, 749 is 1.

2. How to Find the GCF of 81, 21, 35, 749

Answer: Greatest Common Factor(GCF) of 81, 21, 35, 749 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 21, 35, 749) = 1.