A:
Positive:
1 x 2013155455 x 4026310919 x 1059555595 x 21191111213 x 1659651747 x 1152356065 x 331938735 x 23047
Negative:
-1 x -201315545-5 x -40263109-19 x -10595555-95 x -2119111-1213 x -165965-1747 x -115235-6065 x -33193-8735 x -23047
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 201,315,545, 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 | 201,315,545 | |
| -1 | -201,315,545 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 201,315,545.
Example:
1 x 201,315,545 = 201,315,545
and
-1 x -201,315,545 = 201,315,545
Notice both answers equal 201,315,545
With that explanation out of the way, let's continue. Next, we take the number 201,315,545 and divide it by 2:
201,315,545 ÷ 2 = 100,657,772.5
If the quotient is a whole number, then 2 and 100,657,772.5 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 | 201,315,545 | |
| -1 | -201,315,545 |
Now, we try dividing 201,315,545 by 3:
201,315,545 ÷ 3 = 67,105,181.6667
If the quotient is a whole number, then 3 and 67,105,181.6667 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 | 201,315,545 | |
| -1 | -201,315,545 |
Let's try dividing by 4:
201,315,545 ÷ 4 = 50,328,886.25
If the quotient is a whole number, then 4 and 50,328,886.25 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 | 201,315,545 | |
| -1 | 201,315,545 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 95 | 1,213 | 1,747 | 6,065 | 8,735 | 23,047 | 33,193 | 115,235 | 165,965 | 2,119,111 | 10,595,555 | 40,263,109 | 201,315,545 |
| -1 | -5 | -19 | -95 | -1,213 | -1,747 | -6,065 | -8,735 | -23,047 | -33,193 | -115,235 | -165,965 | -2,119,111 | -10,595,555 | -40,263,109 | -201,315,545 |
Here are some more numbers to try:
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