A:
Positive:
1 x 6322152111 x 574741117 x 3718913187 x 338083233 x 2713371451 x 435712563 x 246673961 x 15961
Negative:
-1 x -63221521-11 x -5747411-17 x -3718913-187 x -338083-233 x -271337-1451 x -43571-2563 x -24667-3961 x -15961
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 63,221,521, 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 | 63,221,521 | |
| -1 | -63,221,521 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 63,221,521.
Example:
1 x 63,221,521 = 63,221,521
and
-1 x -63,221,521 = 63,221,521
Notice both answers equal 63,221,521
With that explanation out of the way, let's continue. Next, we take the number 63,221,521 and divide it by 2:
63,221,521 ÷ 2 = 31,610,760.5
If the quotient is a whole number, then 2 and 31,610,760.5 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 | 63,221,521 | |
| -1 | -63,221,521 |
Now, we try dividing 63,221,521 by 3:
63,221,521 ÷ 3 = 21,073,840.3333
If the quotient is a whole number, then 3 and 21,073,840.3333 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 | 63,221,521 | |
| -1 | -63,221,521 |
Let's try dividing by 4:
63,221,521 ÷ 4 = 15,805,380.25
If the quotient is a whole number, then 4 and 15,805,380.25 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 | 63,221,521 | |
| -1 | 63,221,521 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 187 | 233 | 1,451 | 2,563 | 3,961 | 15,961 | 24,667 | 43,571 | 271,337 | 338,083 | 3,718,913 | 5,747,411 | 63,221,521 |
| -1 | -11 | -17 | -187 | -233 | -1,451 | -2,563 | -3,961 | -15,961 | -24,667 | -43,571 | -271,337 | -338,083 | -3,718,913 | -5,747,411 | -63,221,521 |
Here are some more numbers to try:
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