A:
Positive:
1 x 1325388897 x 1893412719 x 697573189 x 1489201133 x 996533623 x 2127431691 x 7837911197 x 11837
Negative:
-1 x -132538889-7 x -18934127-19 x -6975731-89 x -1489201-133 x -996533-623 x -212743-1691 x -78379-11197 x -11837
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 132,538,889, 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 | 132,538,889 | |
| -1 | -132,538,889 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 132,538,889.
Example:
1 x 132,538,889 = 132,538,889
and
-1 x -132,538,889 = 132,538,889
Notice both answers equal 132,538,889
With that explanation out of the way, let's continue. Next, we take the number 132,538,889 and divide it by 2:
132,538,889 ÷ 2 = 66,269,444.5
If the quotient is a whole number, then 2 and 66,269,444.5 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 | 132,538,889 | |
| -1 | -132,538,889 |
Now, we try dividing 132,538,889 by 3:
132,538,889 ÷ 3 = 44,179,629.6667
If the quotient is a whole number, then 3 and 44,179,629.6667 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 | 132,538,889 | |
| -1 | -132,538,889 |
Let's try dividing by 4:
132,538,889 ÷ 4 = 33,134,722.25
If the quotient is a whole number, then 4 and 33,134,722.25 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 | 132,538,889 | |
| -1 | 132,538,889 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 89 | 133 | 623 | 1,691 | 11,197 | 11,837 | 78,379 | 212,743 | 996,533 | 1,489,201 | 6,975,731 | 18,934,127 | 132,538,889 |
| -1 | -7 | -19 | -89 | -133 | -623 | -1,691 | -11,197 | -11,837 | -78,379 | -212,743 | -996,533 | -1,489,201 | -6,975,731 | -18,934,127 | -132,538,889 |
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