A:
Positive:
1 x 5352172111 x 486561137 x 1446533107 x 500203407 x 1315031177 x 454731229 x 435493959 x 13519
Negative:
-1 x -53521721-11 x -4865611-37 x -1446533-107 x -500203-407 x -131503-1177 x -45473-1229 x -43549-3959 x -13519
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 53,521,721, 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 | 53,521,721 | |
| -1 | -53,521,721 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 53,521,721.
Example:
1 x 53,521,721 = 53,521,721
and
-1 x -53,521,721 = 53,521,721
Notice both answers equal 53,521,721
With that explanation out of the way, let's continue. Next, we take the number 53,521,721 and divide it by 2:
53,521,721 ÷ 2 = 26,760,860.5
If the quotient is a whole number, then 2 and 26,760,860.5 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 | 53,521,721 | |
| -1 | -53,521,721 |
Now, we try dividing 53,521,721 by 3:
53,521,721 ÷ 3 = 17,840,573.6667
If the quotient is a whole number, then 3 and 17,840,573.6667 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 | 53,521,721 | |
| -1 | -53,521,721 |
Let's try dividing by 4:
53,521,721 ÷ 4 = 13,380,430.25
If the quotient is a whole number, then 4 and 13,380,430.25 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 | 53,521,721 | |
| -1 | 53,521,721 |
If you did it right, you will end up with this table:
| 1 | 11 | 37 | 107 | 407 | 1,177 | 1,229 | 3,959 | 13,519 | 43,549 | 45,473 | 131,503 | 500,203 | 1,446,533 | 4,865,611 | 53,521,721 |
| -1 | -11 | -37 | -107 | -407 | -1,177 | -1,229 | -3,959 | -13,519 | -43,549 | -45,473 | -131,503 | -500,203 | -1,446,533 | -4,865,611 | -53,521,721 |
Here are some more numbers to try:
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