A:
Positive:
1 x 787867311 x 71624319 x 41466723 x 342551121 x 65113149 x 52877209 x 37697253 x 31141437 x 180291639 x 48072299 x 34272783 x 2831
Negative:
-1 x -7878673-11 x -716243-19 x -414667-23 x -342551-121 x -65113-149 x -52877-209 x -37697-253 x -31141-437 x -18029-1639 x -4807-2299 x -3427-2783 x -2831
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 7,878,673, 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 | 7,878,673 | |
| -1 | -7,878,673 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,878,673.
Example:
1 x 7,878,673 = 7,878,673
and
-1 x -7,878,673 = 7,878,673
Notice both answers equal 7,878,673
With that explanation out of the way, let's continue. Next, we take the number 7,878,673 and divide it by 2:
7,878,673 ÷ 2 = 3,939,336.5
If the quotient is a whole number, then 2 and 3,939,336.5 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 | 7,878,673 | |
| -1 | -7,878,673 |
Now, we try dividing 7,878,673 by 3:
7,878,673 ÷ 3 = 2,626,224.3333
If the quotient is a whole number, then 3 and 2,626,224.3333 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 | 7,878,673 | |
| -1 | -7,878,673 |
Let's try dividing by 4:
7,878,673 ÷ 4 = 1,969,668.25
If the quotient is a whole number, then 4 and 1,969,668.25 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 | 7,878,673 | |
| -1 | 7,878,673 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 23 | 121 | 149 | 209 | 253 | 437 | 1,639 | 2,299 | 2,783 | 2,831 | 3,427 | 4,807 | 18,029 | 31,141 | 37,697 | 52,877 | 65,113 | 342,551 | 414,667 | 716,243 | 7,878,673 |
| -1 | -11 | -19 | -23 | -121 | -149 | -209 | -253 | -437 | -1,639 | -2,299 | -2,783 | -2,831 | -3,427 | -4,807 | -18,029 | -31,141 | -37,697 | -52,877 | -65,113 | -342,551 | -414,667 | -716,243 | -7,878,673 |
Here are some more numbers to try:
Try the factor calculator