A:
Positive:
1 x 48713767713 x 3747212923 x 21179899109 x 4469153299 x 16292231417 x 3437812507 x 19431114947 x 32591
Negative:
-1 x -487137677-13 x -37472129-23 x -21179899-109 x -4469153-299 x -1629223-1417 x -343781-2507 x -194311-14947 x -32591
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 487,137,677, 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 | 487,137,677 | |
| -1 | -487,137,677 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 487,137,677.
Example:
1 x 487,137,677 = 487,137,677
and
-1 x -487,137,677 = 487,137,677
Notice both answers equal 487,137,677
With that explanation out of the way, let's continue. Next, we take the number 487,137,677 and divide it by 2:
487,137,677 ÷ 2 = 243,568,838.5
If the quotient is a whole number, then 2 and 243,568,838.5 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 | 487,137,677 | |
| -1 | -487,137,677 |
Now, we try dividing 487,137,677 by 3:
487,137,677 ÷ 3 = 162,379,225.6667
If the quotient is a whole number, then 3 and 162,379,225.6667 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 | 487,137,677 | |
| -1 | -487,137,677 |
Let's try dividing by 4:
487,137,677 ÷ 4 = 121,784,419.25
If the quotient is a whole number, then 4 and 121,784,419.25 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 | 487,137,677 | |
| -1 | 487,137,677 |
If you did it right, you will end up with this table:
| 1 | 13 | 23 | 109 | 299 | 1,417 | 2,507 | 14,947 | 32,591 | 194,311 | 343,781 | 1,629,223 | 4,469,153 | 21,179,899 | 37,472,129 | 487,137,677 |
| -1 | -13 | -23 | -109 | -299 | -1,417 | -2,507 | -14,947 | -32,591 | -194,311 | -343,781 | -1,629,223 | -4,469,153 | -21,179,899 | -37,472,129 | -487,137,677 |
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