Greatest Common Factor of 21, 71, 33, 70

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

• Greatest Common Factor of 21, 71, 33, 70 by common division method
• Greatest Common Factor of 21, 71, 33, 70 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 71

List of positive integer factors of 71 that divides 71 without a remainder.

1,71

Factors of 33

List of positive integer factors of 33 that divides 33 without a remainder.

1,3,11,33

Factors of 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Greatest Common Factor

We found the factors 21,71,33,70 . The biggest common factor number is the GCF number.
So the greatest common factor 21,71,33,70 is 1.

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

• GCF of 72, 91, 46, 84
• GCF of 55, 30, 71, 34
• GCF of 27, 24, 87, 59
• GCF of 42, 81, 89, 69
• GCF of 73, 70, 45, 22

1. What is the GCF of 21, 71, 33, 70?

Answer: GCF of 21, 71, 33, 70 is 1.

2. How to Find the GCF of 21, 71, 33, 70

Answer: Greatest Common Factor(GCF) of 21, 71, 33, 70 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 71, 33, 70) = 1.