A:
Positive:
1 x 20217590913 x 1555199373 x 2769533163 x 1240343949 x 2130411307 x 1546872119 x 9541111899 x 16991
Negative:
-1 x -202175909-13 x -15551993-73 x -2769533-163 x -1240343-949 x -213041-1307 x -154687-2119 x -95411-11899 x -16991
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 202,175,909, 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 | 202,175,909 | |
| -1 | -202,175,909 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 202,175,909.
Example:
1 x 202,175,909 = 202,175,909
and
-1 x -202,175,909 = 202,175,909
Notice both answers equal 202,175,909
With that explanation out of the way, let's continue. Next, we take the number 202,175,909 and divide it by 2:
202,175,909 ÷ 2 = 101,087,954.5
If the quotient is a whole number, then 2 and 101,087,954.5 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 | 202,175,909 | |
| -1 | -202,175,909 |
Now, we try dividing 202,175,909 by 3:
202,175,909 ÷ 3 = 67,391,969.6667
If the quotient is a whole number, then 3 and 67,391,969.6667 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 | 202,175,909 | |
| -1 | -202,175,909 |
Let's try dividing by 4:
202,175,909 ÷ 4 = 50,543,977.25
If the quotient is a whole number, then 4 and 50,543,977.25 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 | 202,175,909 | |
| -1 | 202,175,909 |
If you did it right, you will end up with this table:
| 1 | 13 | 73 | 163 | 949 | 1,307 | 2,119 | 11,899 | 16,991 | 95,411 | 154,687 | 213,041 | 1,240,343 | 2,769,533 | 15,551,993 | 202,175,909 |
| -1 | -13 | -73 | -163 | -949 | -1,307 | -2,119 | -11,899 | -16,991 | -95,411 | -154,687 | -213,041 | -1,240,343 | -2,769,533 | -15,551,993 | -202,175,909 |
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