Greatest Common Factor of 21, 15, 770, 350

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

• Greatest Common Factor of 21, 15, 770, 350 by common division method
• Greatest Common Factor of 21, 15, 770, 350 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 15

List of positive integer factors of 15 that divides 15 without a remainder.

1,3,5,15

Factors of 770

List of positive integer factors of 770 that divides 770 without a remainder.

1,2,5,7,10,11,14,22,35,55,70,77,110,154,385,770

Factors of 350

List of positive integer factors of 350 that divides 350 without a remainder.

1,2,5,7,10,14,25,35,50,70,175,350

Greatest Common Factor

We found the factors 21,15,770,350 . The biggest common factor number is the GCF number.
So the greatest common factor 21,15,770,350 is 1.

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

• GCF of 44, 35, 472, 773
• GCF of 97, 77, 243, 501
• GCF of 65, 59, 990, 792
• GCF of 31, 41, 991, 918
• GCF of 27, 96, 124, 346

1. What is the GCF of 21, 15, 770, 350?

Answer: GCF of 21, 15, 770, 350 is 1.

2. How to Find the GCF of 21, 15, 770, 350

Answer: Greatest Common Factor(GCF) of 21, 15, 770, 350 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 15, 770, 350) = 1.