A:
Positive:
1 x 2021561997 x 2887945741 x 493063973 x 2769263287 x 704377511 x 3956092993 x 675439649 x 20951
Negative:
-1 x -202156199-7 x -28879457-41 x -4930639-73 x -2769263-287 x -704377-511 x -395609-2993 x -67543-9649 x -20951
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 202,156,199, 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 | 202,156,199 | |
| -1 | -202,156,199 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 202,156,199.
Example:
1 x 202,156,199 = 202,156,199
and
-1 x -202,156,199 = 202,156,199
Notice both answers equal 202,156,199
With that explanation out of the way, let's continue. Next, we take the number 202,156,199 and divide it by 2:
202,156,199 ÷ 2 = 101,078,099.5
If the quotient is a whole number, then 2 and 101,078,099.5 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 | 202,156,199 | |
| -1 | -202,156,199 |
Now, we try dividing 202,156,199 by 3:
202,156,199 ÷ 3 = 67,385,399.6667
If the quotient is a whole number, then 3 and 67,385,399.6667 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 | 202,156,199 | |
| -1 | -202,156,199 |
Let's try dividing by 4:
202,156,199 ÷ 4 = 50,539,049.75
If the quotient is a whole number, then 4 and 50,539,049.75 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 | 202,156,199 | |
| -1 | 202,156,199 |
If you did it right, you will end up with this table:
| 1 | 7 | 41 | 73 | 287 | 511 | 2,993 | 9,649 | 20,951 | 67,543 | 395,609 | 704,377 | 2,769,263 | 4,930,639 | 28,879,457 | 202,156,199 |
| -1 | -7 | -41 | -73 | -287 | -511 | -2,993 | -9,649 | -20,951 | -67,543 | -395,609 | -704,377 | -2,769,263 | -4,930,639 | -28,879,457 | -202,156,199 |
Here are some more numbers to try:
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