Greatest Common Factor of 21, 33, 66, 380

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

• Greatest Common Factor of 21, 33, 66, 380 by common division method
• Greatest Common Factor of 21, 33, 66, 380 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 33

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

1,3,11,33

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 380

List of positive integer factors of 380 that divides 380 without a remainder.

1,2,4,5,10,19,20,38,76,95,190,380

Greatest Common Factor

We found the factors 21,33,66,380 . The biggest common factor number is the GCF number.
So the greatest common factor 21,33,66,380 is 1.

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

• GCF of 13, 79, 98, 809
• GCF of 25, 22, 97, 739
• GCF of 32, 40, 31, 653
• GCF of 65, 81, 87, 246
• GCF of 28, 53, 44, 756

1. What is the GCF of 21, 33, 66, 380?

Answer: GCF of 21, 33, 66, 380 is 1.

2. How to Find the GCF of 21, 33, 66, 380

Answer: Greatest Common Factor(GCF) of 21, 33, 66, 380 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 33, 66, 380) = 1.