A:
Positive:
1 x 2024251397 x 2891787723 x 8801093161 x 1257299397 x 5098872779 x 728413167 x 639179131 x 22169
Negative:
-1 x -202425139-7 x -28917877-23 x -8801093-161 x -1257299-397 x -509887-2779 x -72841-3167 x -63917-9131 x -22169
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 202,425,139, 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 | 202,425,139 | |
| -1 | -202,425,139 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 202,425,139.
Example:
1 x 202,425,139 = 202,425,139
and
-1 x -202,425,139 = 202,425,139
Notice both answers equal 202,425,139
With that explanation out of the way, let's continue. Next, we take the number 202,425,139 and divide it by 2:
202,425,139 ÷ 2 = 101,212,569.5
If the quotient is a whole number, then 2 and 101,212,569.5 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 | 202,425,139 | |
| -1 | -202,425,139 |
Now, we try dividing 202,425,139 by 3:
202,425,139 ÷ 3 = 67,475,046.3333
If the quotient is a whole number, then 3 and 67,475,046.3333 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 | 202,425,139 | |
| -1 | -202,425,139 |
Let's try dividing by 4:
202,425,139 ÷ 4 = 50,606,284.75
If the quotient is a whole number, then 4 and 50,606,284.75 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 | 202,425,139 | |
| -1 | 202,425,139 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 161 | 397 | 2,779 | 3,167 | 9,131 | 22,169 | 63,917 | 72,841 | 509,887 | 1,257,299 | 8,801,093 | 28,917,877 | 202,425,139 |
| -1 | -7 | -23 | -161 | -397 | -2,779 | -3,167 | -9,131 | -22,169 | -63,917 | -72,841 | -509,887 | -1,257,299 | -8,801,093 | -28,917,877 | -202,425,139 |
Here are some more numbers to try:
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