A:
Positive:
1 x 78808737 x 112583911 x 71644313 x 60622177 x 10234991 x 86603143 x 551111001 x 7873
Negative:
-1 x -7880873-7 x -1125839-11 x -716443-13 x -606221-77 x -102349-91 x -86603-143 x -55111-1001 x -7873
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 7,880,873, 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 | 7,880,873 | |
| -1 | -7,880,873 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,880,873.
Example:
1 x 7,880,873 = 7,880,873
and
-1 x -7,880,873 = 7,880,873
Notice both answers equal 7,880,873
With that explanation out of the way, let's continue. Next, we take the number 7,880,873 and divide it by 2:
7,880,873 ÷ 2 = 3,940,436.5
If the quotient is a whole number, then 2 and 3,940,436.5 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 | 7,880,873 | |
| -1 | -7,880,873 |
Now, we try dividing 7,880,873 by 3:
7,880,873 ÷ 3 = 2,626,957.6667
If the quotient is a whole number, then 3 and 2,626,957.6667 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 | 7,880,873 | |
| -1 | -7,880,873 |
Let's try dividing by 4:
7,880,873 ÷ 4 = 1,970,218.25
If the quotient is a whole number, then 4 and 1,970,218.25 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 | 7,880,873 | |
| -1 | 7,880,873 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 13 | 77 | 91 | 143 | 1,001 | 7,873 | 55,111 | 86,603 | 102,349 | 606,221 | 716,443 | 1,125,839 | 7,880,873 |
| -1 | -7 | -11 | -13 | -77 | -91 | -143 | -1,001 | -7,873 | -55,111 | -86,603 | -102,349 | -606,221 | -716,443 | -1,125,839 | -7,880,873 |
Here are some more numbers to try:
Try the factor calculator