Greatest Common Factor of 38, 13, 51, 21

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

• Greatest Common Factor of 38, 13, 51, 21 by common division method
• Greatest Common Factor of 38, 13, 51, 21 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 38

List of positive integer factors of 38 that divides 38 without a remainder.

1,2,19,38

Factors of 13

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

1,13

Factors of 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 38,13,51,21 . The biggest common factor number is the GCF number.
So the greatest common factor 38,13,51,21 is 1.

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

• GCF of 46, 96, 94, 47
• GCF of 86, 19, 32, 42
• GCF of 35, 51, 63, 75
• GCF of 36, 60, 74, 61
• GCF of 87, 99, 72, 44

1. What is the GCF of 38, 13, 51, 21?

Answer: GCF of 38, 13, 51, 21 is 1.

2. How to Find the GCF of 38, 13, 51, 21

Answer: Greatest Common Factor(GCF) of 38, 13, 51, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(38, 13, 51, 21) = 1.