What is the Greatest Common Factor of 70780 and 70800?

Greatest common factor (GCF) of 70780 and 70800 is 20.

GCF(70780,70800) = 20

We will now calculate the prime factors of 70780 and 70800, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 70780 and 70800.

How to find the GCF of 70780 and 70800?

We will first find the prime factorization of 70780 and 70800. After we will calculate the factors of 70780 and 70800 and find the biggest common factor number .

Step-1: Prime Factorization of 70780

Prime factors of 70780 are 2, 5, 3539. Prime factorization of 70780 in exponential form is:

70780 = 2² × 5¹ × 3539¹

Step-2: Prime Factorization of 70800

Prime factors of 70800 are 2, 3, 5, 59. Prime factorization of 70800 in exponential form is:

70800 = 2⁴ × 3¹ × 5² × 59¹

Step-3: Factors of 70780

List of positive integer factors of 70780 that divides 70780 without a remainder.

1, 2, 4, 5, 10, 20, 3539, 7078, 14156, 17695, 35390

Step-4: Factors of 70800

List of positive integer factors of 70800 that divides 70780 without a remainder.

1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 40, 48, 50, 59, 60, 75, 80, 100, 118, 120, 150, 177, 200, 236, 240, 295, 300, 354, 400, 472, 590, 600, 708, 885, 944, 1180, 1200, 1416, 1475, 1770, 2360, 2832, 2950, 3540, 4425, 4720, 5900, 7080, 8850, 11800, 14160, 17700, 23600, 35400

Final Step: Biggest Common Factor Number

We found the factors and prime factorization of 70780 and 70800. The biggest common factor number is the GCF number.
So the greatest common factor 70780 and 70800 is 20.

Also check out the Least Common Multiple of 70780 and 70800