Q: What are the factor combinations of the number 91,015?
A:
Positive:
1 x 910155 x 18203109 x 835167 x 545
Negative:
-1 x -91015-5 x -18203-109 x -835-167 x -545
A:
Positive:
1 x 910155 x 18203109 x 835167 x 545
Negative:
-1 x -91015-5 x -18203-109 x -835-167 x -545
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 91,015, 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 | 91,015 | |
-1 | -91,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 91,015.
Example:
1 x 91,015 = 91,015
and
-1 x -91,015 = 91,015
Notice both answers equal 91,015
With that explanation out of the way, let's continue. Next, we take the number 91,015 and divide it by 2:
91,015 ÷ 2 = 45,507.5
If the quotient is a whole number, then 2 and 45,507.5 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 | 91,015 | |
-1 | -91,015 |
Now, we try dividing 91,015 by 3:
91,015 ÷ 3 = 30,338.3333
If the quotient is a whole number, then 3 and 30,338.3333 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 | 91,015 | |
-1 | -91,015 |
Let's try dividing by 4:
91,015 ÷ 4 = 22,753.75
If the quotient is a whole number, then 4 and 22,753.75 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 | 91,015 | |
-1 | 91,015 |
If you did it right, you will end up with this table:
1 | 5 | 109 | 167 | 545 | 835 | 18,203 | 91,015 |
-1 | -5 | -109 | -167 | -545 | -835 | -18,203 | -91,015 |
Here are some more numbers to try:
Try the factor calculator