A:
Positive:
1 x 78783677 x 112548149 x 160783103 x 76489223 x 35329343 x 22969721 x 109271561 x 5047
Negative:
-1 x -7878367-7 x -1125481-49 x -160783-103 x -76489-223 x -35329-343 x -22969-721 x -10927-1561 x -5047
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 7,878,367, 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 | 7,878,367 | |
| -1 | -7,878,367 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,878,367.
Example:
1 x 7,878,367 = 7,878,367
and
-1 x -7,878,367 = 7,878,367
Notice both answers equal 7,878,367
With that explanation out of the way, let's continue. Next, we take the number 7,878,367 and divide it by 2:
7,878,367 ÷ 2 = 3,939,183.5
If the quotient is a whole number, then 2 and 3,939,183.5 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 | 7,878,367 | |
| -1 | -7,878,367 |
Now, we try dividing 7,878,367 by 3:
7,878,367 ÷ 3 = 2,626,122.3333
If the quotient is a whole number, then 3 and 2,626,122.3333 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 | 7,878,367 | |
| -1 | -7,878,367 |
Let's try dividing by 4:
7,878,367 ÷ 4 = 1,969,591.75
If the quotient is a whole number, then 4 and 1,969,591.75 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 | 7,878,367 | |
| -1 | 7,878,367 |
If you did it right, you will end up with this table:
| 1 | 7 | 49 | 103 | 223 | 343 | 721 | 1,561 | 5,047 | 10,927 | 22,969 | 35,329 | 76,489 | 160,783 | 1,125,481 | 7,878,367 |
| -1 | -7 | -49 | -103 | -223 | -343 | -721 | -1,561 | -5,047 | -10,927 | -22,969 | -35,329 | -76,489 | -160,783 | -1,125,481 | -7,878,367 |
Here are some more numbers to try:
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