A:
Positive:
1 x 2015401455 x 4030802923 x 876261531 x 6501295115 x 1752523155 x 1300259713 x 2826653565 x 56533
Negative:
-1 x -201540145-5 x -40308029-23 x -8762615-31 x -6501295-115 x -1752523-155 x -1300259-713 x -282665-3565 x -56533
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 201,540,145, 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 | 201,540,145 | |
| -1 | -201,540,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 201,540,145.
Example:
1 x 201,540,145 = 201,540,145
and
-1 x -201,540,145 = 201,540,145
Notice both answers equal 201,540,145
With that explanation out of the way, let's continue. Next, we take the number 201,540,145 and divide it by 2:
201,540,145 ÷ 2 = 100,770,072.5
If the quotient is a whole number, then 2 and 100,770,072.5 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 | 201,540,145 | |
| -1 | -201,540,145 |
Now, we try dividing 201,540,145 by 3:
201,540,145 ÷ 3 = 67,180,048.3333
If the quotient is a whole number, then 3 and 67,180,048.3333 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 | 201,540,145 | |
| -1 | -201,540,145 |
Let's try dividing by 4:
201,540,145 ÷ 4 = 50,385,036.25
If the quotient is a whole number, then 4 and 50,385,036.25 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 | 201,540,145 | |
| -1 | 201,540,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 31 | 115 | 155 | 713 | 3,565 | 56,533 | 282,665 | 1,300,259 | 1,752,523 | 6,501,295 | 8,762,615 | 40,308,029 | 201,540,145 |
| -1 | -5 | -23 | -31 | -115 | -155 | -713 | -3,565 | -56,533 | -282,665 | -1,300,259 | -1,752,523 | -6,501,295 | -8,762,615 | -40,308,029 | -201,540,145 |
Here are some more numbers to try:
Try the factor calculator