A:
Positive:
1 x 2506147155 x 5012294313 x 1927805565 x 3855611251 x 9984651255 x 1996933263 x 7680515361 x 16315
Negative:
-1 x -250614715-5 x -50122943-13 x -19278055-65 x -3855611-251 x -998465-1255 x -199693-3263 x -76805-15361 x -16315
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 250,614,715, 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 | 250,614,715 | |
| -1 | -250,614,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 250,614,715.
Example:
1 x 250,614,715 = 250,614,715
and
-1 x -250,614,715 = 250,614,715
Notice both answers equal 250,614,715
With that explanation out of the way, let's continue. Next, we take the number 250,614,715 and divide it by 2:
250,614,715 ÷ 2 = 125,307,357.5
If the quotient is a whole number, then 2 and 125,307,357.5 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 | 250,614,715 | |
| -1 | -250,614,715 |
Now, we try dividing 250,614,715 by 3:
250,614,715 ÷ 3 = 83,538,238.3333
If the quotient is a whole number, then 3 and 83,538,238.3333 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 | 250,614,715 | |
| -1 | -250,614,715 |
Let's try dividing by 4:
250,614,715 ÷ 4 = 62,653,678.75
If the quotient is a whole number, then 4 and 62,653,678.75 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 | 250,614,715 | |
| -1 | 250,614,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 251 | 1,255 | 3,263 | 15,361 | 16,315 | 76,805 | 199,693 | 998,465 | 3,855,611 | 19,278,055 | 50,122,943 | 250,614,715 |
| -1 | -5 | -13 | -65 | -251 | -1,255 | -3,263 | -15,361 | -16,315 | -76,805 | -199,693 | -998,465 | -3,855,611 | -19,278,055 | -50,122,943 | -250,614,715 |
Here are some more numbers to try:
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