Greatest Common Factor of 55, 72, 21, 880

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

• Greatest Common Factor of 55, 72, 21, 880 by common division method
• Greatest Common Factor of 55, 72, 21, 880 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 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

Factors of 21

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

1,3,7,21

Factors of 880

List of positive integer factors of 880 that divides 880 without a remainder.

1,2,4,5,8,10,11,16,20,22,40,44,55,80,88,110,176,220,440,880

Greatest Common Factor

We found the factors 55,72,21,880 . The biggest common factor number is the GCF number.
So the greatest common factor 55,72,21,880 is 1.

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

• GCF of 75, 48, 77, 375
• GCF of 49, 39, 63, 473
• GCF of 94, 49, 99, 329
• GCF of 42, 48, 70, 900
• GCF of 77, 69, 79, 765

1. What is the GCF of 55, 72, 21, 880?

Answer: GCF of 55, 72, 21, 880 is 1.

2. How to Find the GCF of 55, 72, 21, 880

Answer: Greatest Common Factor(GCF) of 55, 72, 21, 880 = 1

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

Step 2: Then multiply all the prime factors GCF(55, 72, 21, 880) = 1.