As your math tutor, I’m here to help you break down factor pairs of 1280 step by step!
Factor pairs of 1280 are any two numbers that, when multiplied together, equal 1280. The question to ask is “what two numbers multiplied together equal 1280?” Every factor can be paired with another factor, and multiplying the two will result in 1280.
To find the factor pairs of 1280, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 1280. For reference, the first prime numbers to check are 2, 3, 5, 7, 11, and 13. In this case, the smallest factor that’s a prime number larger than 1 is 2.
Step 2:
Divide 1280 by the smallest prime factor, in this case, 2:
1280 ÷ 2 = 640
2 and 640 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 640 as the new focus. Find the smallest prime factor that isn’t 1, and divide 640 by that number. In this case, 2 is the new smallest prime factor:
640 ÷ 2 = 320
Remember that this new factor pair is only for the factors of 640, not 1280. So, to finish the factor pair for 1280, you’d multiply 2 and 2 before pairing with 320:
2 x 2 = 4
Step 4:
Repeat this process until there are no longer any prime factors larger than one to divide by. At the end, you should have the full list of factor pairs.
Here are all the factor pairs for 1280:
(1, 1280), (2, 640), (4, 320), (5, 256), (8, 160), (10, 128), (16, 80), (20, 64), (32, 40)
So, to list all the factors of 1280: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280
The negative factors of 1280 would be: -1, -2, -4, -5, -8, -10, -16, -20, -32, -40, -64, -80, -128, -160, -256, -320, -640, -1280
Now you’ve got it! A math tutor would always encourage you to practice with different numbers to reinforce your understanding of factor pairs. Try another one!