Greatest Common Factor of 77, 20, 43, 990

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

• Greatest Common Factor of 77, 20, 43, 990 by common division method
• Greatest Common Factor of 77, 20, 43, 990 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 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 20

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

1,2,4,5,10,20

Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 990

List of positive integer factors of 990 that divides 990 without a remainder.

1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990

Greatest Common Factor

We found the factors 77,20,43,990 . The biggest common factor number is the GCF number.
So the greatest common factor 77,20,43,990 is 1.

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

• GCF of 32, 88, 66, 112
• GCF of 33, 71, 29, 463
• GCF of 83, 43, 86, 418
• GCF of 17, 59, 33, 152
• GCF of 30, 90, 90, 979

1. What is the GCF of 77, 20, 43, 990?

Answer: GCF of 77, 20, 43, 990 is 1.

2. How to Find the GCF of 77, 20, 43, 990

Answer: Greatest Common Factor(GCF) of 77, 20, 43, 990 = 1

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

Step 2: Then multiply all the prime factors GCF(77, 20, 43, 990) = 1.