A:
Positive:
1 x 22134523119 x 1164974947 x 4709473311 x 711721797 x 277723893 x 2478675909 x 3745914617 x 15143
Negative:
-1 x -221345231-19 x -11649749-47 x -4709473-311 x -711721-797 x -277723-893 x -247867-5909 x -37459-14617 x -15143
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 221,345,231, 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 | 221,345,231 | |
| -1 | -221,345,231 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,345,231.
Example:
1 x 221,345,231 = 221,345,231
and
-1 x -221,345,231 = 221,345,231
Notice both answers equal 221,345,231
With that explanation out of the way, let's continue. Next, we take the number 221,345,231 and divide it by 2:
221,345,231 ÷ 2 = 110,672,615.5
If the quotient is a whole number, then 2 and 110,672,615.5 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 | 221,345,231 | |
| -1 | -221,345,231 |
Now, we try dividing 221,345,231 by 3:
221,345,231 ÷ 3 = 73,781,743.6667
If the quotient is a whole number, then 3 and 73,781,743.6667 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 | 221,345,231 | |
| -1 | -221,345,231 |
Let's try dividing by 4:
221,345,231 ÷ 4 = 55,336,307.75
If the quotient is a whole number, then 4 and 55,336,307.75 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 | 221,345,231 | |
| -1 | 221,345,231 |
If you did it right, you will end up with this table:
| 1 | 19 | 47 | 311 | 797 | 893 | 5,909 | 14,617 | 15,143 | 37,459 | 247,867 | 277,723 | 711,721 | 4,709,473 | 11,649,749 | 221,345,231 |
| -1 | -19 | -47 | -311 | -797 | -893 | -5,909 | -14,617 | -15,143 | -37,459 | -247,867 | -277,723 | -711,721 | -4,709,473 | -11,649,749 | -221,345,231 |
Here are some more numbers to try:
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