A:
Positive:
1 x 1071522111 x 97411119 x 563959167 x 64163209 x 51269307 x 349031837 x 58333173 x 3377
Negative:
-1 x -10715221-11 x -974111-19 x -563959-167 x -64163-209 x -51269-307 x -34903-1837 x -5833-3173 x -3377
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 10,715,221, 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 | 10,715,221 | |
| -1 | -10,715,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 10,715,221.
Example:
1 x 10,715,221 = 10,715,221
and
-1 x -10,715,221 = 10,715,221
Notice both answers equal 10,715,221
With that explanation out of the way, let's continue. Next, we take the number 10,715,221 and divide it by 2:
10,715,221 ÷ 2 = 5,357,610.5
If the quotient is a whole number, then 2 and 5,357,610.5 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 | 10,715,221 | |
| -1 | -10,715,221 |
Now, we try dividing 10,715,221 by 3:
10,715,221 ÷ 3 = 3,571,740.3333
If the quotient is a whole number, then 3 and 3,571,740.3333 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 | 10,715,221 | |
| -1 | -10,715,221 |
Let's try dividing by 4:
10,715,221 ÷ 4 = 2,678,805.25
If the quotient is a whole number, then 4 and 2,678,805.25 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 | 10,715,221 | |
| -1 | 10,715,221 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 167 | 209 | 307 | 1,837 | 3,173 | 3,377 | 5,833 | 34,903 | 51,269 | 64,163 | 563,959 | 974,111 | 10,715,221 |
| -1 | -11 | -19 | -167 | -209 | -307 | -1,837 | -3,173 | -3,377 | -5,833 | -34,903 | -51,269 | -64,163 | -563,959 | -974,111 | -10,715,221 |
Here are some more numbers to try:
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