A:
Positive:
1 x 2010212655 x 4020425323 x 8740055115 x 1748011331 x 6073151655 x 1214635281 x 380657613 x 26405
Negative:
-1 x -201021265-5 x -40204253-23 x -8740055-115 x -1748011-331 x -607315-1655 x -121463-5281 x -38065-7613 x -26405
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 201,021,265, 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 | 201,021,265 | |
| -1 | -201,021,265 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 201,021,265.
Example:
1 x 201,021,265 = 201,021,265
and
-1 x -201,021,265 = 201,021,265
Notice both answers equal 201,021,265
With that explanation out of the way, let's continue. Next, we take the number 201,021,265 and divide it by 2:
201,021,265 ÷ 2 = 100,510,632.5
If the quotient is a whole number, then 2 and 100,510,632.5 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 | 201,021,265 | |
| -1 | -201,021,265 |
Now, we try dividing 201,021,265 by 3:
201,021,265 ÷ 3 = 67,007,088.3333
If the quotient is a whole number, then 3 and 67,007,088.3333 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 | 201,021,265 | |
| -1 | -201,021,265 |
Let's try dividing by 4:
201,021,265 ÷ 4 = 50,255,316.25
If the quotient is a whole number, then 4 and 50,255,316.25 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 | 201,021,265 | |
| -1 | 201,021,265 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 115 | 331 | 1,655 | 5,281 | 7,613 | 26,405 | 38,065 | 121,463 | 607,315 | 1,748,011 | 8,740,055 | 40,204,253 | 201,021,265 |
| -1 | -5 | -23 | -115 | -331 | -1,655 | -5,281 | -7,613 | -26,405 | -38,065 | -121,463 | -607,315 | -1,748,011 | -8,740,055 | -40,204,253 | -201,021,265 |
Here are some more numbers to try:
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