A:
Positive:
1 x 572126177 x 817323111 x 520114777 x 743021349 x 1639332129 x 268732443 x 234193839 x 14903
Negative:
-1 x -57212617-7 x -8173231-11 x -5201147-77 x -743021-349 x -163933-2129 x -26873-2443 x -23419-3839 x -14903
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 57,212,617, 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 | 57,212,617 | |
| -1 | -57,212,617 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 57,212,617.
Example:
1 x 57,212,617 = 57,212,617
and
-1 x -57,212,617 = 57,212,617
Notice both answers equal 57,212,617
With that explanation out of the way, let's continue. Next, we take the number 57,212,617 and divide it by 2:
57,212,617 ÷ 2 = 28,606,308.5
If the quotient is a whole number, then 2 and 28,606,308.5 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 | 57,212,617 | |
| -1 | -57,212,617 |
Now, we try dividing 57,212,617 by 3:
57,212,617 ÷ 3 = 19,070,872.3333
If the quotient is a whole number, then 3 and 19,070,872.3333 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 | 57,212,617 | |
| -1 | -57,212,617 |
Let's try dividing by 4:
57,212,617 ÷ 4 = 14,303,154.25
If the quotient is a whole number, then 4 and 14,303,154.25 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 | 57,212,617 | |
| -1 | 57,212,617 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 349 | 2,129 | 2,443 | 3,839 | 14,903 | 23,419 | 26,873 | 163,933 | 743,021 | 5,201,147 | 8,173,231 | 57,212,617 |
| -1 | -7 | -11 | -77 | -349 | -2,129 | -2,443 | -3,839 | -14,903 | -23,419 | -26,873 | -163,933 | -743,021 | -5,201,147 | -8,173,231 | -57,212,617 |
Here are some more numbers to try:
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