A:
Positive:
1 x 2577837555 x 5155675129 x 888909531 x 8315605145 x 1777819155 x 1663121899 x 2867454495 x 57349
Negative:
-1 x -257783755-5 x -51556751-29 x -8889095-31 x -8315605-145 x -1777819-155 x -1663121-899 x -286745-4495 x -57349
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 257,783,755, 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 | 257,783,755 | |
| -1 | -257,783,755 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 257,783,755.
Example:
1 x 257,783,755 = 257,783,755
and
-1 x -257,783,755 = 257,783,755
Notice both answers equal 257,783,755
With that explanation out of the way, let's continue. Next, we take the number 257,783,755 and divide it by 2:
257,783,755 ÷ 2 = 128,891,877.5
If the quotient is a whole number, then 2 and 128,891,877.5 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 | 257,783,755 | |
| -1 | -257,783,755 |
Now, we try dividing 257,783,755 by 3:
257,783,755 ÷ 3 = 85,927,918.3333
If the quotient is a whole number, then 3 and 85,927,918.3333 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 | 257,783,755 | |
| -1 | -257,783,755 |
Let's try dividing by 4:
257,783,755 ÷ 4 = 64,445,938.75
If the quotient is a whole number, then 4 and 64,445,938.75 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 | 257,783,755 | |
| -1 | 257,783,755 |
If you did it right, you will end up with this table:
| 1 | 5 | 29 | 31 | 145 | 155 | 899 | 4,495 | 57,349 | 286,745 | 1,663,121 | 1,777,819 | 8,315,605 | 8,889,095 | 51,556,751 | 257,783,755 |
| -1 | -5 | -29 | -31 | -145 | -155 | -899 | -4,495 | -57,349 | -286,745 | -1,663,121 | -1,777,819 | -8,315,605 | -8,889,095 | -51,556,751 | -257,783,755 |
Here are some more numbers to try:
Try the factor calculator