Greatest Common Factor of 21, 20, 75, 416

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

• Greatest Common Factor of 21, 20, 75, 416 by common division method
• Greatest Common Factor of 21, 20, 75, 416 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 21

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

1,3,7,21

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 75

List of positive integer factors of 75 that divides 75 without a remainder.

1,3,5,15,25,75

Factors of 416

List of positive integer factors of 416 that divides 416 without a remainder.

1,2,4,8,13,16,26,32,52,104,208,416

Greatest Common Factor

We found the factors 21,20,75,416 . The biggest common factor number is the GCF number.
So the greatest common factor 21,20,75,416 is 1.

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

• GCF of 16, 30, 46, 185
• GCF of 55, 33, 95, 399
• GCF of 55, 57, 67, 637
• GCF of 19, 90, 96, 873
• GCF of 41, 13, 59, 766

1. What is the GCF of 21, 20, 75, 416?

Answer: GCF of 21, 20, 75, 416 is 1.

2. How to Find the GCF of 21, 20, 75, 416

Answer: Greatest Common Factor(GCF) of 21, 20, 75, 416 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 20, 75, 416) = 1.