Greatest Common Factor of 20, 221, 244, 660

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

• Greatest Common Factor of 20, 221, 244, 660 by common division method
• Greatest Common Factor of 20, 221, 244, 660 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 221

List of positive integer factors of 221 that divides 221 without a remainder.

1,13,17,221

Factors of 244

List of positive integer factors of 244 that divides 244 without a remainder.

1,2,4,61,122,244

Factors of 660

List of positive integer factors of 660 that divides 660 without a remainder.

1,2,3,4,5,6,10,11,12,15,20,22,30,33,44,55,60,66,110,132,165,220,330,660

Greatest Common Factor

We found the factors 20,221,244,660 . The biggest common factor number is the GCF number.
So the greatest common factor 20,221,244,660 is 1.

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

• GCF of 77, 655, 768, 110
• GCF of 71, 578, 593, 791
• GCF of 55, 819, 780, 506
• GCF of 62, 394, 863, 594
• GCF of 76, 367, 240, 547

1. What is the GCF of 20, 221, 244, 660?

Answer: GCF of 20, 221, 244, 660 is 1.

2. How to Find the GCF of 20, 221, 244, 660

Answer: Greatest Common Factor(GCF) of 20, 221, 244, 660 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 221, 244, 660) = 1.