Greatest Common Factor of 15, 28, 14, 221

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

• Greatest Common Factor of 15, 28, 14, 221 by common division method
• Greatest Common Factor of 15, 28, 14, 221 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Factors of 14

List of positive integer factors of 14 that divides 14 without a remainder.

1,2,7,14

Factors of 221

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

1,13,17,221

Greatest Common Factor

We found the factors 15,28,14,221 . The biggest common factor number is the GCF number.
So the greatest common factor 15,28,14,221 is 1.

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

• GCF of 72, 84, 68, 939
• GCF of 66, 20, 27, 491
• GCF of 67, 81, 45, 336
• GCF of 70, 95, 59, 360
• GCF of 32, 86, 54, 939

1. What is the GCF of 15, 28, 14, 221?

Answer: GCF of 15, 28, 14, 221 is 1.

2. How to Find the GCF of 15, 28, 14, 221

Answer: Greatest Common Factor(GCF) of 15, 28, 14, 221 = 1

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

Step 2: Then multiply all the prime factors GCF(15, 28, 14, 221) = 1.