A:
Positive:
1 x 2021401555 x 404280317 x 2887716535 x 5775433353 x 5726351765 x 1145272471 x 8180512355 x 16361
Negative:
-1 x -202140155-5 x -40428031-7 x -28877165-35 x -5775433-353 x -572635-1765 x -114527-2471 x -81805-12355 x -16361
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 202,140,155, 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 | 202,140,155 | |
| -1 | -202,140,155 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 202,140,155.
Example:
1 x 202,140,155 = 202,140,155
and
-1 x -202,140,155 = 202,140,155
Notice both answers equal 202,140,155
With that explanation out of the way, let's continue. Next, we take the number 202,140,155 and divide it by 2:
202,140,155 ÷ 2 = 101,070,077.5
If the quotient is a whole number, then 2 and 101,070,077.5 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 | 202,140,155 | |
| -1 | -202,140,155 |
Now, we try dividing 202,140,155 by 3:
202,140,155 ÷ 3 = 67,380,051.6667
If the quotient is a whole number, then 3 and 67,380,051.6667 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 | 202,140,155 | |
| -1 | -202,140,155 |
Let's try dividing by 4:
202,140,155 ÷ 4 = 50,535,038.75
If the quotient is a whole number, then 4 and 50,535,038.75 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 | 202,140,155 | |
| -1 | 202,140,155 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 353 | 1,765 | 2,471 | 12,355 | 16,361 | 81,805 | 114,527 | 572,635 | 5,775,433 | 28,877,165 | 40,428,031 | 202,140,155 |
| -1 | -5 | -7 | -35 | -353 | -1,765 | -2,471 | -12,355 | -16,361 | -81,805 | -114,527 | -572,635 | -5,775,433 | -28,877,165 | -40,428,031 | -202,140,155 |
Here are some more numbers to try:
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