Greatest Common Factor of 20, 49, 98, 128

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

• Greatest Common Factor of 20, 49, 98, 128 by common division method
• Greatest Common Factor of 20, 49, 98, 128 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 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 128

List of positive integer factors of 128 that divides 128 without a remainder.

1,2,4,8,16,32,64,128

Greatest Common Factor

We found the factors 20,49,98,128 . The biggest common factor number is the GCF number.
So the greatest common factor 20,49,98,128 is 1.

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

• GCF of 51, 15, 79, 768
• GCF of 43, 69, 87, 259
• GCF of 42, 18, 72, 382
• GCF of 13, 29, 52, 143
• GCF of 57, 78, 31, 391

1. What is the GCF of 20, 49, 98, 128?

Answer: GCF of 20, 49, 98, 128 is 1.

2. How to Find the GCF of 20, 49, 98, 128

Answer: Greatest Common Factor(GCF) of 20, 49, 98, 128 = 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, 98, 128) = 1.