A:
Positive:
1 x 2214302237 x 3163288923 x 9627401137 x 1616279161 x 1375343959 x 2308973151 x 7027310039 x 22057
Negative:
-1 x -221430223-7 x -31632889-23 x -9627401-137 x -1616279-161 x -1375343-959 x -230897-3151 x -70273-10039 x -22057
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 221,430,223, 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 | 221,430,223 | |
| -1 | -221,430,223 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,430,223.
Example:
1 x 221,430,223 = 221,430,223
and
-1 x -221,430,223 = 221,430,223
Notice both answers equal 221,430,223
With that explanation out of the way, let's continue. Next, we take the number 221,430,223 and divide it by 2:
221,430,223 ÷ 2 = 110,715,111.5
If the quotient is a whole number, then 2 and 110,715,111.5 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 | 221,430,223 | |
| -1 | -221,430,223 |
Now, we try dividing 221,430,223 by 3:
221,430,223 ÷ 3 = 73,810,074.3333
If the quotient is a whole number, then 3 and 73,810,074.3333 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 | 221,430,223 | |
| -1 | -221,430,223 |
Let's try dividing by 4:
221,430,223 ÷ 4 = 55,357,555.75
If the quotient is a whole number, then 4 and 55,357,555.75 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 | 221,430,223 | |
| -1 | 221,430,223 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 137 | 161 | 959 | 3,151 | 10,039 | 22,057 | 70,273 | 230,897 | 1,375,343 | 1,616,279 | 9,627,401 | 31,632,889 | 221,430,223 |
| -1 | -7 | -23 | -137 | -161 | -959 | -3,151 | -10,039 | -22,057 | -70,273 | -230,897 | -1,375,343 | -1,616,279 | -9,627,401 | -31,632,889 | -221,430,223 |
Here are some more numbers to try:
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