A:
Positive:
1 x 1687357497 x 2410510713 x 1297967391 x 1854239521 x 3238693559 x 474113647 x 462676773 x 24913
Negative:
-1 x -168735749-7 x -24105107-13 x -12979673-91 x -1854239-521 x -323869-3559 x -47411-3647 x -46267-6773 x -24913
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 168,735,749, 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 | 168,735,749 | |
| -1 | -168,735,749 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 168,735,749.
Example:
1 x 168,735,749 = 168,735,749
and
-1 x -168,735,749 = 168,735,749
Notice both answers equal 168,735,749
With that explanation out of the way, let's continue. Next, we take the number 168,735,749 and divide it by 2:
168,735,749 ÷ 2 = 84,367,874.5
If the quotient is a whole number, then 2 and 84,367,874.5 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 | 168,735,749 | |
| -1 | -168,735,749 |
Now, we try dividing 168,735,749 by 3:
168,735,749 ÷ 3 = 56,245,249.6667
If the quotient is a whole number, then 3 and 56,245,249.6667 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 | 168,735,749 | |
| -1 | -168,735,749 |
Let's try dividing by 4:
168,735,749 ÷ 4 = 42,183,937.25
If the quotient is a whole number, then 4 and 42,183,937.25 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 | 168,735,749 | |
| -1 | 168,735,749 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 521 | 3,559 | 3,647 | 6,773 | 24,913 | 46,267 | 47,411 | 323,869 | 1,854,239 | 12,979,673 | 24,105,107 | 168,735,749 |
| -1 | -7 | -13 | -91 | -521 | -3,559 | -3,647 | -6,773 | -24,913 | -46,267 | -47,411 | -323,869 | -1,854,239 | -12,979,673 | -24,105,107 | -168,735,749 |
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