A:
Positive:
1 x 2202099977 x 31458571101 x 2180297331 x 665287707 x 311471941 x 2340172317 x 950416587 x 33431
Negative:
-1 x -220209997-7 x -31458571-101 x -2180297-331 x -665287-707 x -311471-941 x -234017-2317 x -95041-6587 x -33431
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 220,209,997, 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 | 220,209,997 | |
| -1 | -220,209,997 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 220,209,997.
Example:
1 x 220,209,997 = 220,209,997
and
-1 x -220,209,997 = 220,209,997
Notice both answers equal 220,209,997
With that explanation out of the way, let's continue. Next, we take the number 220,209,997 and divide it by 2:
220,209,997 ÷ 2 = 110,104,998.5
If the quotient is a whole number, then 2 and 110,104,998.5 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 | 220,209,997 | |
| -1 | -220,209,997 |
Now, we try dividing 220,209,997 by 3:
220,209,997 ÷ 3 = 73,403,332.3333
If the quotient is a whole number, then 3 and 73,403,332.3333 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 | 220,209,997 | |
| -1 | -220,209,997 |
Let's try dividing by 4:
220,209,997 ÷ 4 = 55,052,499.25
If the quotient is a whole number, then 4 and 55,052,499.25 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 | 220,209,997 | |
| -1 | 220,209,997 |
If you did it right, you will end up with this table:
| 1 | 7 | 101 | 331 | 707 | 941 | 2,317 | 6,587 | 33,431 | 95,041 | 234,017 | 311,471 | 665,287 | 2,180,297 | 31,458,571 | 220,209,997 |
| -1 | -7 | -101 | -331 | -707 | -941 | -2,317 | -6,587 | -33,431 | -95,041 | -234,017 | -311,471 | -665,287 | -2,180,297 | -31,458,571 | -220,209,997 |
Here are some more numbers to try:
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