Greatest Common Factor of 16, 42, 21, 125

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

• Greatest Common Factor of 16, 42, 21, 125 by common division method
• Greatest Common Factor of 16, 42, 21, 125 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 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 21

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

1,3,7,21

Factors of 125

List of positive integer factors of 125 that divides 125 without a remainder.

1,5,25,125

Greatest Common Factor

We found the factors 16,42,21,125 . The biggest common factor number is the GCF number.
So the greatest common factor 16,42,21,125 is 1.

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

• GCF of 42, 24, 68, 244
• GCF of 88, 68, 82, 519
• GCF of 46, 94, 16, 342
• GCF of 96, 97, 78, 755
• GCF of 47, 43, 47, 504

1. What is the GCF of 16, 42, 21, 125?

Answer: GCF of 16, 42, 21, 125 is 1.

2. How to Find the GCF of 16, 42, 21, 125

Answer: Greatest Common Factor(GCF) of 16, 42, 21, 125 = 1

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

Step 2: Then multiply all the prime factors GCF(16, 42, 21, 125) = 1.