Greatest Common Factor of 11, 45, 16, 49, 20

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

• Greatest Common Factor of 11, 45, 16, 49, 20 by common division method
• Greatest Common Factor of 11, 45, 16, 49, 20 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 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 45

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

1,3,5,9,15,45

Factors of 16

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

1,2,4,8,16

Factors of 49

List of positive integer factors of 49 that divides 49 without a remainder.

1,7,49

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 11,45,16,49,20 . The biggest common factor number is the GCF number.
So the greatest common factor 11,45,16,49,20 is 1.

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

• GCF of 69, 80, 15, 64, 92
• GCF of 15, 53, 19, 15, 96
• GCF of 72, 57, 90, 62, 25
• GCF of 78, 15, 80, 76, 23
• GCF of 67, 88, 14, 70, 75

1. What is the GCF of 11, 45, 16, 49, 20?

Answer: GCF of 11, 45, 16, 49, 20 is 1.

2. How to Find the GCF of 11, 45, 16, 49, 20

Answer: Greatest Common Factor(GCF) of 11, 45, 16, 49, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(11, 45, 16, 49, 20) = 1.