A:
Positive:
1 x 2212443317 x 3160633311 x 2011312143 x 514521777 x 2873303301 x 735031473 x 4677473311 x 66821
Negative:
-1 x -221244331-7 x -31606333-11 x -20113121-43 x -5145217-77 x -2873303-301 x -735031-473 x -467747-3311 x -66821
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 221,244,331, 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 | 221,244,331 | |
| -1 | -221,244,331 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,244,331.
Example:
1 x 221,244,331 = 221,244,331
and
-1 x -221,244,331 = 221,244,331
Notice both answers equal 221,244,331
With that explanation out of the way, let's continue. Next, we take the number 221,244,331 and divide it by 2:
221,244,331 ÷ 2 = 110,622,165.5
If the quotient is a whole number, then 2 and 110,622,165.5 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 | 221,244,331 | |
| -1 | -221,244,331 |
Now, we try dividing 221,244,331 by 3:
221,244,331 ÷ 3 = 73,748,110.3333
If the quotient is a whole number, then 3 and 73,748,110.3333 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 | 221,244,331 | |
| -1 | -221,244,331 |
Let's try dividing by 4:
221,244,331 ÷ 4 = 55,311,082.75
If the quotient is a whole number, then 4 and 55,311,082.75 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 | 221,244,331 | |
| -1 | 221,244,331 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 43 | 77 | 301 | 473 | 3,311 | 66,821 | 467,747 | 735,031 | 2,873,303 | 5,145,217 | 20,113,121 | 31,606,333 | 221,244,331 |
| -1 | -7 | -11 | -43 | -77 | -301 | -473 | -3,311 | -66,821 | -467,747 | -735,031 | -2,873,303 | -5,145,217 | -20,113,121 | -31,606,333 | -221,244,331 |
Here are some more numbers to try:
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