A:
Positive:
1 x 274028155 x 548056311 x 249116555 x 498233101 x 271315505 x 542631111 x 246654933 x 5555
Negative:
-1 x -27402815-5 x -5480563-11 x -2491165-55 x -498233-101 x -271315-505 x -54263-1111 x -24665-4933 x -5555
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 27,402,815, 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 | 27,402,815 | |
| -1 | -27,402,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,402,815.
Example:
1 x 27,402,815 = 27,402,815
and
-1 x -27,402,815 = 27,402,815
Notice both answers equal 27,402,815
With that explanation out of the way, let's continue. Next, we take the number 27,402,815 and divide it by 2:
27,402,815 ÷ 2 = 13,701,407.5
If the quotient is a whole number, then 2 and 13,701,407.5 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 | 27,402,815 | |
| -1 | -27,402,815 |
Now, we try dividing 27,402,815 by 3:
27,402,815 ÷ 3 = 9,134,271.6667
If the quotient is a whole number, then 3 and 9,134,271.6667 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 | 27,402,815 | |
| -1 | -27,402,815 |
Let's try dividing by 4:
27,402,815 ÷ 4 = 6,850,703.75
If the quotient is a whole number, then 4 and 6,850,703.75 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 | 27,402,815 | |
| -1 | 27,402,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 101 | 505 | 1,111 | 4,933 | 5,555 | 24,665 | 54,263 | 271,315 | 498,233 | 2,491,165 | 5,480,563 | 27,402,815 |
| -1 | -5 | -11 | -55 | -101 | -505 | -1,111 | -4,933 | -5,555 | -24,665 | -54,263 | -271,315 | -498,233 | -2,491,165 | -5,480,563 | -27,402,815 |
Here are some more numbers to try:
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