The factors of 280 are 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, and 280.
The factors pairs are 1*280, 2*140, 4*70, 5*56, 7*40, 8*35, 10*28, 14*20 The prime factors of 280 are 2, 2, 2, 5, and 7.
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As a product of its prime factors: 2*2*2*5*7 = 280
280 = 23 x 5 x 7
The factors of 200 are: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, and 200.The prime factors of 200 are: 2 and 5.The factors of 280 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, and 280.The prime factors of 280 are: 2, 5, and 7.
The prime factors of 280 are 2, 2, 2, 5, and 7. The prime factors of 240 are 2, 2, 2, 2, 3, and 5. The prime factors of 200 are 2, 2, 2, 5, and 5. The prime factors they all have in common are 2, 2, 2, and 5, so the greatest common factor is 2 x 2 x 2 x 5 = 40.
The greatest common factor can be calculated by identifying the common prime factors and multiplying them together. The prime factors of 280 are 2, 2, 2, 5, and 7. The prime factors of 420 are 2, 2, 3, 5, and 7. The common prime factors are 2, 2, 5, and 7, so the greatest common factor is 2 x 2 x 5 x 7 = 140. The GCF is 140.