A:
Positive:
1 x 2366407155 x 4732814337 x 639569597 x 2439595185 x 1279139485 x 4879193589 x 6593513187 x 17945
Negative:
-1 x -236640715-5 x -47328143-37 x -6395695-97 x -2439595-185 x -1279139-485 x -487919-3589 x -65935-13187 x -17945
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 236,640,715, 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 | 236,640,715 | |
| -1 | -236,640,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 236,640,715.
Example:
1 x 236,640,715 = 236,640,715
and
-1 x -236,640,715 = 236,640,715
Notice both answers equal 236,640,715
With that explanation out of the way, let's continue. Next, we take the number 236,640,715 and divide it by 2:
236,640,715 ÷ 2 = 118,320,357.5
If the quotient is a whole number, then 2 and 118,320,357.5 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 | 236,640,715 | |
| -1 | -236,640,715 |
Now, we try dividing 236,640,715 by 3:
236,640,715 ÷ 3 = 78,880,238.3333
If the quotient is a whole number, then 3 and 78,880,238.3333 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 | 236,640,715 | |
| -1 | -236,640,715 |
Let's try dividing by 4:
236,640,715 ÷ 4 = 59,160,178.75
If the quotient is a whole number, then 4 and 59,160,178.75 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 | 236,640,715 | |
| -1 | 236,640,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 97 | 185 | 485 | 3,589 | 13,187 | 17,945 | 65,935 | 487,919 | 1,279,139 | 2,439,595 | 6,395,695 | 47,328,143 | 236,640,715 |
| -1 | -5 | -37 | -97 | -185 | -485 | -3,589 | -13,187 | -17,945 | -65,935 | -487,919 | -1,279,139 | -2,439,595 | -6,395,695 | -47,328,143 | -236,640,715 |
Here are some more numbers to try:
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