Greatest Common Factor of 561, 385, 748, 420

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

• Greatest Common Factor of 561, 385, 748, 420 by common division method
• Greatest Common Factor of 561, 385, 748, 420 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 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Factors of 385

List of positive integer factors of 385 that divides 385 without a remainder.

1,5,7,11,35,55,77,385

Factors of 748

List of positive integer factors of 748 that divides 748 without a remainder.

1,2,4,11,17,22,34,44,68,187,374,748

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Greatest Common Factor

We found the factors 561,385,748,420 . The biggest common factor number is the GCF number.
So the greatest common factor 561,385,748,420 is 1.

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

• GCF of 607, 873, 849, 869
• GCF of 993, 786, 974, 276
• GCF of 258, 609, 386, 543
• GCF of 258, 390, 475, 864
• GCF of 946, 404, 578, 188

1. What is the GCF of 561, 385, 748, 420?

Answer: GCF of 561, 385, 748, 420 is 1.

2. How to Find the GCF of 561, 385, 748, 420

Answer: Greatest Common Factor(GCF) of 561, 385, 748, 420 = 1

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

Step 2: Then multiply all the prime factors GCF(561, 385, 748, 420) = 1.