Greatest Common Factor of 13, 21, 84, 221

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

• Greatest Common Factor of 13, 21, 84, 221 by common division method
• Greatest Common Factor of 13, 21, 84, 221 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 84

List of positive integer factors of 84 that divides 84 without a remainder.

1,2,3,4,6,7,12,14,21,28,42,84

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 13,21,84,221 . The biggest common factor number is the GCF number.
So the greatest common factor 13,21,84,221 is 1.

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

• GCF of 69, 10, 17, 835
• GCF of 26, 41, 89, 704
• GCF of 11, 20, 86, 486
• GCF of 57, 61, 30, 403
• GCF of 49, 66, 56, 228

1. What is the GCF of 13, 21, 84, 221?

Answer: GCF of 13, 21, 84, 221 is 1.

2. How to Find the GCF of 13, 21, 84, 221

Answer: Greatest Common Factor(GCF) of 13, 21, 84, 221 = 1

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

Step 2: Then multiply all the prime factors GCF(13, 21, 84, 221) = 1.