A:
Positive:
1 x 272173937 x 388819949 x 55545773 x 372841343 x 79351511 x 532631087 x 250393577 x 7609
Negative:
-1 x -27217393-7 x -3888199-49 x -555457-73 x -372841-343 x -79351-511 x -53263-1087 x -25039-3577 x -7609
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 27,217,393, 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 | 27,217,393 | |
| -1 | -27,217,393 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 27,217,393.
Example:
1 x 27,217,393 = 27,217,393
and
-1 x -27,217,393 = 27,217,393
Notice both answers equal 27,217,393
With that explanation out of the way, let's continue. Next, we take the number 27,217,393 and divide it by 2:
27,217,393 ÷ 2 = 13,608,696.5
If the quotient is a whole number, then 2 and 13,608,696.5 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 | 27,217,393 | |
| -1 | -27,217,393 |
Now, we try dividing 27,217,393 by 3:
27,217,393 ÷ 3 = 9,072,464.3333
If the quotient is a whole number, then 3 and 9,072,464.3333 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 | 27,217,393 | |
| -1 | -27,217,393 |
Let's try dividing by 4:
27,217,393 ÷ 4 = 6,804,348.25
If the quotient is a whole number, then 4 and 6,804,348.25 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 | 27,217,393 | |
| -1 | 27,217,393 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 73 | 343 | 511 | 1,087 | 3,577 | 7,609 | 25,039 | 53,263 | 79,351 | 372,841 | 555,457 | 3,888,199 | 27,217,393 |
| -1 | -7 | -49 | -73 | -343 | -511 | -1,087 | -3,577 | -7,609 | -25,039 | -53,263 | -79,351 | -372,841 | -555,457 | -3,888,199 | -27,217,393 |
Here are some more numbers to try:
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