A:
Positive:
1 x 271561555 x 543123113 x 208893531 x 87600565 x 417787155 x 175201403 x 673852015 x 13477
Negative:
-1 x -27156155-5 x -5431231-13 x -2088935-31 x -876005-65 x -417787-155 x -175201-403 x -67385-2015 x -13477
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 27,156,155, 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 | 27,156,155 | |
| -1 | -27,156,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,156,155.
Example:
1 x 27,156,155 = 27,156,155
and
-1 x -27,156,155 = 27,156,155
Notice both answers equal 27,156,155
With that explanation out of the way, let's continue. Next, we take the number 27,156,155 and divide it by 2:
27,156,155 ÷ 2 = 13,578,077.5
If the quotient is a whole number, then 2 and 13,578,077.5 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 | 27,156,155 | |
| -1 | -27,156,155 |
Now, we try dividing 27,156,155 by 3:
27,156,155 ÷ 3 = 9,052,051.6667
If the quotient is a whole number, then 3 and 9,052,051.6667 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 | 27,156,155 | |
| -1 | -27,156,155 |
Let's try dividing by 4:
27,156,155 ÷ 4 = 6,789,038.75
If the quotient is a whole number, then 4 and 6,789,038.75 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 | 27,156,155 | |
| -1 | 27,156,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 31 | 65 | 155 | 403 | 2,015 | 13,477 | 67,385 | 175,201 | 417,787 | 876,005 | 2,088,935 | 5,431,231 | 27,156,155 |
| -1 | -5 | -13 | -31 | -65 | -155 | -403 | -2,015 | -13,477 | -67,385 | -175,201 | -417,787 | -876,005 | -2,088,935 | -5,431,231 | -27,156,155 |
Here are some more numbers to try:
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