Greatest Common Factor of 19, 34, 42, 870

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

• Greatest Common Factor of 19, 34, 42, 870 by common division method
• Greatest Common Factor of 19, 34, 42, 870 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 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 34

List of positive integer factors of 34 that divides 34 without a remainder.

1,2,17,34

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 870

List of positive integer factors of 870 that divides 870 without a remainder.

1,2,3,5,6,10,15,29,30,58,87,145,174,290,435,870

Greatest Common Factor

We found the factors 19,34,42,870 . The biggest common factor number is the GCF number.
So the greatest common factor 19,34,42,870 is 1.

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

• GCF of 66, 39, 21, 489
• GCF of 97, 23, 83, 457
• GCF of 42, 38, 49, 346
• GCF of 12, 77, 43, 619
• GCF of 28, 77, 88, 723

1. What is the GCF of 19, 34, 42, 870?

Answer: GCF of 19, 34, 42, 870 is 1.

2. How to Find the GCF of 19, 34, 42, 870

Answer: Greatest Common Factor(GCF) of 19, 34, 42, 870 = 1

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

Step 2: Then multiply all the prime factors GCF(19, 34, 42, 870) = 1.