Factor pairs of 2400 are any two numbers that, when multiplied together, equal 2400. The question to ask is “what two numbers multiplied together equal 2400?” Every factor can be paired with another factor, and multiplying the two will result in 2400.
To find the factor pairs of 2400, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 2400. 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 2400 by the smallest prime factor, in this case, 2:
2400 ÷ 2 = 1200
2 and 1200 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 1200 as the new focus. Find the smallest prime factor that isn’t 1, and divide 1200 by that number. In this case, 2 is the new smallest prime factor:
1200 ÷ 2 = 600
Remember that this new factor pair is only for the factors of 1200, not 2400. So, to finish the factor pair for 2400, you’d multiply 2 and 2 before pairing with 600:
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 2400:
(1, 2400), (2, 1200), (3, 800), (4, 600), (5, 480), (6, 400), (8, 300), (10, 240), (12, 200), (15, 160), (16, 150), (20, 120), (24, 100), (25, 96), (30, 80), (32, 75), (40, 60), (48, 50)
So, to list all the factors of 2400: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 30, 32, 40, 48, 50, 60, 75, 80, 96, 100, 120, 150, 160, 200, 240, 300, 400, 480, 600, 800, 1200, 2400
The negative factors of 2400 would be: -1, -2, -3, -4, -5, -6, -8, -10, -12, -15, -16, -20, -24, -25, -30, -32, -40, -48, -50, -60, -75, -80, -96, -100, -120, -150, -160, -200, -240, -300, -400, -480, -600, -800, -1200, -2400