Greatest Common Factor of 21, 70, 45, 757

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

• Greatest Common Factor of 21, 70, 45, 757 by common division method
• Greatest Common Factor of 21, 70, 45, 757 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 70

List of positive integer factors of 70 that divides 70 without a remainder.

1,2,5,7,10,14,35,70

Factors of 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 757

List of positive integer factors of 757 that divides 757 without a remainder.

1,757

Greatest Common Factor

We found the factors 21,70,45,757 . The biggest common factor number is the GCF number.
So the greatest common factor 21,70,45,757 is 1.

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

• GCF of 95, 43, 55, 852
• GCF of 71, 53, 46, 814
• GCF of 84, 24, 61, 935
• GCF of 89, 74, 17, 946
• GCF of 12, 96, 87, 466

1. What is the GCF of 21, 70, 45, 757?

Answer: GCF of 21, 70, 45, 757 is 1.

2. How to Find the GCF of 21, 70, 45, 757

Answer: Greatest Common Factor(GCF) of 21, 70, 45, 757 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 70, 45, 757) = 1.