A:
Positive:
1 x 25751479931 x 830692971 x 362696979 x 32596811481 x 1738792201 x 1169992449 x 1051515609 x 45911
Negative:
-1 x -257514799-31 x -8306929-71 x -3626969-79 x -3259681-1481 x -173879-2201 x -116999-2449 x -105151-5609 x -45911
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 257,514,799, 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 | 257,514,799 | |
| -1 | -257,514,799 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 257,514,799.
Example:
1 x 257,514,799 = 257,514,799
and
-1 x -257,514,799 = 257,514,799
Notice both answers equal 257,514,799
With that explanation out of the way, let's continue. Next, we take the number 257,514,799 and divide it by 2:
257,514,799 ÷ 2 = 128,757,399.5
If the quotient is a whole number, then 2 and 128,757,399.5 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 | 257,514,799 | |
| -1 | -257,514,799 |
Now, we try dividing 257,514,799 by 3:
257,514,799 ÷ 3 = 85,838,266.3333
If the quotient is a whole number, then 3 and 85,838,266.3333 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 | 257,514,799 | |
| -1 | -257,514,799 |
Let's try dividing by 4:
257,514,799 ÷ 4 = 64,378,699.75
If the quotient is a whole number, then 4 and 64,378,699.75 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 | 257,514,799 | |
| -1 | 257,514,799 |
If you did it right, you will end up with this table:
| 1 | 31 | 71 | 79 | 1,481 | 2,201 | 2,449 | 5,609 | 45,911 | 105,151 | 116,999 | 173,879 | 3,259,681 | 3,626,969 | 8,306,929 | 257,514,799 |
| -1 | -31 | -71 | -79 | -1,481 | -2,201 | -2,449 | -5,609 | -45,911 | -105,151 | -116,999 | -173,879 | -3,259,681 | -3,626,969 | -8,306,929 | -257,514,799 |
Here are some more numbers to try:
Try the factor calculator