Greatest Common Factor of 20, 49, 400

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

• Greatest Common Factor of 20, 49, 400 by common division method
• Greatest Common Factor of 20, 49, 400 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 20

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

1,2,4,5,10,20

Factors of 49

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

1,7,49

Factors of 400

List of positive integer factors of 400 that divides 400 without a remainder.

1,2,4,5,8,10,16,20,25,40,50,80,100,200,400

Greatest Common Factor

We found the factors 20,49,400 . The biggest common factor number is the GCF number.
So the greatest common factor 20,49,400 is 1.

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

• GCF of 84, 94, 812
• GCF of 76, 16, 694
• GCF of 63, 36, 232
• GCF of 19, 72, 207
• GCF of 88, 69, 972

1. What is the GCF of 20, 49, 400?

Answer: GCF of 20, 49, 400 is 1.

2. How to Find the GCF of 20, 49, 400

Answer: Greatest Common Factor(GCF) of 20, 49, 400 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 49, 400) = 1.