Greatest Common Factor of 45, 79, 16, 21, 809

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

• Greatest Common Factor of 45, 79, 16, 21, 809 by common division method
• Greatest Common Factor of 45, 79, 16, 21, 809 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Factors of 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 21

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

1,3,7,21

Factors of 809

List of positive integer factors of 809 that divides 809 without a remainder.

1,809

Greatest Common Factor

We found the factors 45,79,16,21,809 . The biggest common factor number is the GCF number.
So the greatest common factor 45,79,16,21,809 is 1.

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

• GCF of 48, 95, 24, 44, 623
• GCF of 12, 12, 46, 47, 607
• GCF of 96, 90, 74, 35, 515
• GCF of 74, 65, 29, 73, 437
• GCF of 66, 66, 84, 52, 648

1. What is the GCF of 45, 79, 16, 21, 809?

Answer: GCF of 45, 79, 16, 21, 809 is 1.

2. How to Find the GCF of 45, 79, 16, 21, 809

Answer: Greatest Common Factor(GCF) of 45, 79, 16, 21, 809 = 1

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

Step 2: Then multiply all the prime factors GCF(45, 79, 16, 21, 809) = 1.