A:
Positive:
1 x 25065577119 x 1319240923 x 1089807761 x 4109111437 x 5735831159 x 2162691403 x 1786579403 x 26657
Negative:
-1 x -250655771-19 x -13192409-23 x -10898077-61 x -4109111-437 x -573583-1159 x -216269-1403 x -178657-9403 x -26657
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 250,655,771, 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 | 250,655,771 | |
| -1 | -250,655,771 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 250,655,771.
Example:
1 x 250,655,771 = 250,655,771
and
-1 x -250,655,771 = 250,655,771
Notice both answers equal 250,655,771
With that explanation out of the way, let's continue. Next, we take the number 250,655,771 and divide it by 2:
250,655,771 ÷ 2 = 125,327,885.5
If the quotient is a whole number, then 2 and 125,327,885.5 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 | 250,655,771 | |
| -1 | -250,655,771 |
Now, we try dividing 250,655,771 by 3:
250,655,771 ÷ 3 = 83,551,923.6667
If the quotient is a whole number, then 3 and 83,551,923.6667 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 | 250,655,771 | |
| -1 | -250,655,771 |
Let's try dividing by 4:
250,655,771 ÷ 4 = 62,663,942.75
If the quotient is a whole number, then 4 and 62,663,942.75 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 | 250,655,771 | |
| -1 | 250,655,771 |
If you did it right, you will end up with this table:
| 1 | 19 | 23 | 61 | 437 | 1,159 | 1,403 | 9,403 | 26,657 | 178,657 | 216,269 | 573,583 | 4,109,111 | 10,898,077 | 13,192,409 | 250,655,771 |
| -1 | -19 | -23 | -61 | -437 | -1,159 | -1,403 | -9,403 | -26,657 | -178,657 | -216,269 | -573,583 | -4,109,111 | -10,898,077 | -13,192,409 | -250,655,771 |
Here are some more numbers to try:
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