A:
Positive:
1 x 2771611555 x 5543223123 x 12050485103 x 2690885115 x 2410097515 x 5381772369 x 11699511845 x 23399
Negative:
-1 x -277161155-5 x -55432231-23 x -12050485-103 x -2690885-115 x -2410097-515 x -538177-2369 x -116995-11845 x -23399
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 277,161,155, 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 | 277,161,155 | |
| -1 | -277,161,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 277,161,155.
Example:
1 x 277,161,155 = 277,161,155
and
-1 x -277,161,155 = 277,161,155
Notice both answers equal 277,161,155
With that explanation out of the way, let's continue. Next, we take the number 277,161,155 and divide it by 2:
277,161,155 ÷ 2 = 138,580,577.5
If the quotient is a whole number, then 2 and 138,580,577.5 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 | 277,161,155 | |
| -1 | -277,161,155 |
Now, we try dividing 277,161,155 by 3:
277,161,155 ÷ 3 = 92,387,051.6667
If the quotient is a whole number, then 3 and 92,387,051.6667 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 | 277,161,155 | |
| -1 | -277,161,155 |
Let's try dividing by 4:
277,161,155 ÷ 4 = 69,290,288.75
If the quotient is a whole number, then 4 and 69,290,288.75 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 | 277,161,155 | |
| -1 | 277,161,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 103 | 115 | 515 | 2,369 | 11,845 | 23,399 | 116,995 | 538,177 | 2,410,097 | 2,690,885 | 12,050,485 | 55,432,231 | 277,161,155 |
| -1 | -5 | -23 | -103 | -115 | -515 | -2,369 | -11,845 | -23,399 | -116,995 | -538,177 | -2,410,097 | -2,690,885 | -12,050,485 | -55,432,231 | -277,161,155 |
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