As a product of its prime factors: 2*2*2*5*7 = 280
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.
280 = 23 x 5 x 7
The prime factors of 200 are: 2, 5
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.
As a product of its prime factors: 2*2*2*5*7 = 280
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.
81 and 200 have no common prime factors.
As a product of its prime factors: 2*2*2*5*7 = 280
280 = 23 x 5 x 7
The prime factors of 200 are: 23 x 52
The prime factors of 200 are: 2, 5
The prime factors of 200 are 2 and 5 or as a product of its prime factors 2*2*2*5*5 = 200
The prime factors of 200 are 2 and 5 As a product of its prime factors: 2*2*2*5*5 = 200
The prime factors of 200 are: 2 5
The prime factors of 200 are: 2, 5
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.