A:
Positive:
1 x 2210231037 x 3157472917 x 13001359119 x 1857337563 x 3925813299 x 669973941 x 560839571 x 23093
Negative:
-1 x -221023103-7 x -31574729-17 x -13001359-119 x -1857337-563 x -392581-3299 x -66997-3941 x -56083-9571 x -23093
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 221,023,103, 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 | 221,023,103 | |
| -1 | -221,023,103 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 221,023,103.
Example:
1 x 221,023,103 = 221,023,103
and
-1 x -221,023,103 = 221,023,103
Notice both answers equal 221,023,103
With that explanation out of the way, let's continue. Next, we take the number 221,023,103 and divide it by 2:
221,023,103 ÷ 2 = 110,511,551.5
If the quotient is a whole number, then 2 and 110,511,551.5 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 | 221,023,103 | |
| -1 | -221,023,103 |
Now, we try dividing 221,023,103 by 3:
221,023,103 ÷ 3 = 73,674,367.6667
If the quotient is a whole number, then 3 and 73,674,367.6667 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 | 221,023,103 | |
| -1 | -221,023,103 |
Let's try dividing by 4:
221,023,103 ÷ 4 = 55,255,775.75
If the quotient is a whole number, then 4 and 55,255,775.75 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 | 221,023,103 | |
| -1 | 221,023,103 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 563 | 3,299 | 3,941 | 9,571 | 23,093 | 56,083 | 66,997 | 392,581 | 1,857,337 | 13,001,359 | 31,574,729 | 221,023,103 |
| -1 | -7 | -17 | -119 | -563 | -3,299 | -3,941 | -9,571 | -23,093 | -56,083 | -66,997 | -392,581 | -1,857,337 | -13,001,359 | -31,574,729 | -221,023,103 |
Here are some more numbers to try:
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