A:
Positive:
1 x 25774437711 x 2343130767 x 3846931191 x 1349447737 x 3497211831 x 1407672101 x 12267712797 x 20141
Negative:
-1 x -257744377-11 x -23431307-67 x -3846931-191 x -1349447-737 x -349721-1831 x -140767-2101 x -122677-12797 x -20141
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 257,744,377, 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 | 257,744,377 | |
| -1 | -257,744,377 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 257,744,377.
Example:
1 x 257,744,377 = 257,744,377
and
-1 x -257,744,377 = 257,744,377
Notice both answers equal 257,744,377
With that explanation out of the way, let's continue. Next, we take the number 257,744,377 and divide it by 2:
257,744,377 ÷ 2 = 128,872,188.5
If the quotient is a whole number, then 2 and 128,872,188.5 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 | 257,744,377 | |
| -1 | -257,744,377 |
Now, we try dividing 257,744,377 by 3:
257,744,377 ÷ 3 = 85,914,792.3333
If the quotient is a whole number, then 3 and 85,914,792.3333 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 | 257,744,377 | |
| -1 | -257,744,377 |
Let's try dividing by 4:
257,744,377 ÷ 4 = 64,436,094.25
If the quotient is a whole number, then 4 and 64,436,094.25 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 | 257,744,377 | |
| -1 | 257,744,377 |
If you did it right, you will end up with this table:
| 1 | 11 | 67 | 191 | 737 | 1,831 | 2,101 | 12,797 | 20,141 | 122,677 | 140,767 | 349,721 | 1,349,447 | 3,846,931 | 23,431,307 | 257,744,377 |
| -1 | -11 | -67 | -191 | -737 | -1,831 | -2,101 | -12,797 | -20,141 | -122,677 | -140,767 | -349,721 | -1,349,447 | -3,846,931 | -23,431,307 | -257,744,377 |
Here are some more numbers to try:
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