A:
Positive:
1 x 3123407155 x 6246814319 x 1643898571 x 439916595 x 3287797355 x 8798331349 x 2315356745 x 46307
Negative:
-1 x -312340715-5 x -62468143-19 x -16438985-71 x -4399165-95 x -3287797-355 x -879833-1349 x -231535-6745 x -46307
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 312,340,715, 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 | 312,340,715 | |
| -1 | -312,340,715 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 312,340,715.
Example:
1 x 312,340,715 = 312,340,715
and
-1 x -312,340,715 = 312,340,715
Notice both answers equal 312,340,715
With that explanation out of the way, let's continue. Next, we take the number 312,340,715 and divide it by 2:
312,340,715 ÷ 2 = 156,170,357.5
If the quotient is a whole number, then 2 and 156,170,357.5 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 | 312,340,715 | |
| -1 | -312,340,715 |
Now, we try dividing 312,340,715 by 3:
312,340,715 ÷ 3 = 104,113,571.6667
If the quotient is a whole number, then 3 and 104,113,571.6667 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 | 312,340,715 | |
| -1 | -312,340,715 |
Let's try dividing by 4:
312,340,715 ÷ 4 = 78,085,178.75
If the quotient is a whole number, then 4 and 78,085,178.75 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 | 312,340,715 | |
| -1 | 312,340,715 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 71 | 95 | 355 | 1,349 | 6,745 | 46,307 | 231,535 | 879,833 | 3,287,797 | 4,399,165 | 16,438,985 | 62,468,143 | 312,340,715 |
| -1 | -5 | -19 | -71 | -95 | -355 | -1,349 | -6,745 | -46,307 | -231,535 | -879,833 | -3,287,797 | -4,399,165 | -16,438,985 | -62,468,143 | -312,340,715 |
Here are some more numbers to try:
Try the factor calculator