Factor pairs of 190 are any two numbers that, when multiplied together, equal 190. The question to ask is “what two numbers multiplied together equal 190?” Every factor can be paired with another factor, and multiplying the two will result in 190.
To find the factor pairs of 190, follow these steps:
Step 1:
Find the smallest prime number that is larger than 1, and is a factor of 190. 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 190 by the smallest prime factor, in this case, 2:
190 ÷ 2 = 95
2 and 95 will make a new factor pair.
Step 3:
Repeat Steps 1 and 2, using 95 as the new focus. Find the smallest prime factor that isn’t 1, and divide 95 by that number. In this case, 5 is the new smallest prime factor:
95 ÷ 5 = 19
Remember that this new factor pair is only for the factors of 95, not 190. So, to finish the factor pair for 190, you’d multiply 2 and 5 before pairing with 19:
2 x 5 = 10
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 190:
(1, 190), (2, 95), (5, 38), (10, 19)
So, to list all the factors of 190: 1, 2, 5, 10, 19, 38, 95, 190
The negative factors of 190 would be: -1, -2, -5, -10, -19, -38, -95, -190