A:
Positive:
1 x 5215532217 x 7450760323 x 2267622737 x 14096033161 x 3239461259 x 2013719851 x 6128715957 x 87553
Negative:
-1 x -521553221-7 x -74507603-23 x -22676227-37 x -14096033-161 x -3239461-259 x -2013719-851 x -612871-5957 x -87553
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 521,553,221, 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 | 521,553,221 | |
| -1 | -521,553,221 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 521,553,221.
Example:
1 x 521,553,221 = 521,553,221
and
-1 x -521,553,221 = 521,553,221
Notice both answers equal 521,553,221
With that explanation out of the way, let's continue. Next, we take the number 521,553,221 and divide it by 2:
521,553,221 ÷ 2 = 260,776,610.5
If the quotient is a whole number, then 2 and 260,776,610.5 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 | 521,553,221 | |
| -1 | -521,553,221 |
Now, we try dividing 521,553,221 by 3:
521,553,221 ÷ 3 = 173,851,073.6667
If the quotient is a whole number, then 3 and 173,851,073.6667 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 | 521,553,221 | |
| -1 | -521,553,221 |
Let's try dividing by 4:
521,553,221 ÷ 4 = 130,388,305.25
If the quotient is a whole number, then 4 and 130,388,305.25 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 | 521,553,221 | |
| -1 | 521,553,221 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 37 | 161 | 259 | 851 | 5,957 | 87,553 | 612,871 | 2,013,719 | 3,239,461 | 14,096,033 | 22,676,227 | 74,507,603 | 521,553,221 |
| -1 | -7 | -23 | -37 | -161 | -259 | -851 | -5,957 | -87,553 | -612,871 | -2,013,719 | -3,239,461 | -14,096,033 | -22,676,227 | -74,507,603 | -521,553,221 |
Here are some more numbers to try:
Try the factor calculator