Q: What are the factor combinations of the number 81,565?
A:
Positive:
1 x 815655 x 1631311 x 741555 x 1483
Negative:
-1 x -81565-5 x -16313-11 x -7415-55 x -1483
A:
Positive:
1 x 815655 x 1631311 x 741555 x 1483
Negative:
-1 x -81565-5 x -16313-11 x -7415-55 x -1483
Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 81,565, it is easier to work with a table - it's called factoring from the outside in.
We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.
1 | 81,565 | |
-1 | -81,565 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 81,565.
Example:
1 x 81,565 = 81,565
and
-1 x -81,565 = 81,565
Notice both answers equal 81,565
With that explanation out of the way, let's continue. Next, we take the number 81,565 and divide it by 2:
81,565 ÷ 2 = 40,782.5
If the quotient is a whole number, then 2 and 40,782.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
1 | 81,565 | |
-1 | -81,565 |
Now, we try dividing 81,565 by 3:
81,565 ÷ 3 = 27,188.3333
If the quotient is a whole number, then 3 and 27,188.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
1 | 81,565 | |
-1 | -81,565 |
Let's try dividing by 4:
81,565 ÷ 4 = 20,391.25
If the quotient is a whole number, then 4 and 20,391.25 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.
Here is what our table should look like at this step:
1 | 81,565 | |
-1 | 81,565 |
If you did it right, you will end up with this table:
1 | 5 | 11 | 55 | 1,483 | 7,415 | 16,313 | 81,565 |
-1 | -5 | -11 | -55 | -1,483 | -7,415 | -16,313 | -81,565 |
Here are some more numbers to try:
Try the factor calculator