As your math tutor, I’m here to help you break down factor pairs of 864 step by step!
Factor pairs of 864 are any two numbers that, when multiplied together, equal 864. The question to ask is “what two numbers multiplied together equal 864?” Every factor can be paired with another factor, and multiplying the two will result in 864.
To find the factor pairs of 864, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 864. 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 864 by the smallest prime factor, in this case, 2:
864 ÷ 2 = 432
2 and 432 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 432 as the new focus. Find the smallest prime factor that isn’t 1, and divide 432 by that number. In this case, 2 is the new smallest prime factor:
432 ÷ 2 = 216
Remember that this new factor pair is only for the factors of 432, not 864. So, to finish the factor pair for 864, you’d multiply 2 and 2 before pairing with 216:
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 864:
(1, 864), (2, 432), (3, 288), (4, 216), (6, 144), (8, 108), (9, 96), (12, 72), (16, 54), (18, 48), (24, 36), (27, 32)
So, to list all the factors of 864: 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 72, 96, 108, 144, 216, 288, 432, 864
The negative factors of 864 would be: -1, -2, -3, -4, -6, -8, -9, -12, -16, -18, -24, -27, -32, -36, -48, -54, -72, -96, -108, -144, -216, -288, -432, -864
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!