A:
Positive:
1 x 2771372877 x 3959104119 x 1458617349 x 5655863133 x 2083739179 x 1548253931 x 2976771253 x 2211791663 x 1666493401 x 814878771 x 3159711641 x 23807
Negative:
-1 x -277137287-7 x -39591041-19 x -14586173-49 x -5655863-133 x -2083739-179 x -1548253-931 x -297677-1253 x -221179-1663 x -166649-3401 x -81487-8771 x -31597-11641 x -23807
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 277,137,287, 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 | 277,137,287 | |
| -1 | -277,137,287 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 277,137,287.
Example:
1 x 277,137,287 = 277,137,287
and
-1 x -277,137,287 = 277,137,287
Notice both answers equal 277,137,287
With that explanation out of the way, let's continue. Next, we take the number 277,137,287 and divide it by 2:
277,137,287 ÷ 2 = 138,568,643.5
If the quotient is a whole number, then 2 and 138,568,643.5 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 | 277,137,287 | |
| -1 | -277,137,287 |
Now, we try dividing 277,137,287 by 3:
277,137,287 ÷ 3 = 92,379,095.6667
If the quotient is a whole number, then 3 and 92,379,095.6667 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 | 277,137,287 | |
| -1 | -277,137,287 |
Let's try dividing by 4:
277,137,287 ÷ 4 = 69,284,321.75
If the quotient is a whole number, then 4 and 69,284,321.75 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 | 277,137,287 | |
| -1 | 277,137,287 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 49 | 133 | 179 | 931 | 1,253 | 1,663 | 3,401 | 8,771 | 11,641 | 23,807 | 31,597 | 81,487 | 166,649 | 221,179 | 297,677 | 1,548,253 | 2,083,739 | 5,655,863 | 14,586,173 | 39,591,041 | 277,137,287 |
| -1 | -7 | -19 | -49 | -133 | -179 | -931 | -1,253 | -1,663 | -3,401 | -8,771 | -11,641 | -23,807 | -31,597 | -81,487 | -166,649 | -221,179 | -297,677 | -1,548,253 | -2,083,739 | -5,655,863 | -14,586,173 | -39,591,041 | -277,137,287 |
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