A:
Positive:
1 x 2574541555 x 514908317 x 3677916535 x 7355833977 x 2635154885 x 527036839 x 376457529 x 34195
Negative:
-1 x -257454155-5 x -51490831-7 x -36779165-35 x -7355833-977 x -263515-4885 x -52703-6839 x -37645-7529 x -34195
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 257,454,155, 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 | 257,454,155 | |
| -1 | -257,454,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 257,454,155.
Example:
1 x 257,454,155 = 257,454,155
and
-1 x -257,454,155 = 257,454,155
Notice both answers equal 257,454,155
With that explanation out of the way, let's continue. Next, we take the number 257,454,155 and divide it by 2:
257,454,155 ÷ 2 = 128,727,077.5
If the quotient is a whole number, then 2 and 128,727,077.5 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 | 257,454,155 | |
| -1 | -257,454,155 |
Now, we try dividing 257,454,155 by 3:
257,454,155 ÷ 3 = 85,818,051.6667
If the quotient is a whole number, then 3 and 85,818,051.6667 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 | 257,454,155 | |
| -1 | -257,454,155 |
Let's try dividing by 4:
257,454,155 ÷ 4 = 64,363,538.75
If the quotient is a whole number, then 4 and 64,363,538.75 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 | 257,454,155 | |
| -1 | 257,454,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 977 | 4,885 | 6,839 | 7,529 | 34,195 | 37,645 | 52,703 | 263,515 | 7,355,833 | 36,779,165 | 51,490,831 | 257,454,155 |
| -1 | -5 | -7 | -35 | -977 | -4,885 | -6,839 | -7,529 | -34,195 | -37,645 | -52,703 | -263,515 | -7,355,833 | -36,779,165 | -51,490,831 | -257,454,155 |
Here are some more numbers to try:
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