A:
Positive:
1 x 67811155 x 135622311 x 61646555 x 123293139 x 48785695 x 9757887 x 76451529 x 4435
Negative:
-1 x -6781115-5 x -1356223-11 x -616465-55 x -123293-139 x -48785-695 x -9757-887 x -7645-1529 x -4435
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 6,781,115, 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 | 6,781,115 | |
| -1 | -6,781,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 6,781,115.
Example:
1 x 6,781,115 = 6,781,115
and
-1 x -6,781,115 = 6,781,115
Notice both answers equal 6,781,115
With that explanation out of the way, let's continue. Next, we take the number 6,781,115 and divide it by 2:
6,781,115 ÷ 2 = 3,390,557.5
If the quotient is a whole number, then 2 and 3,390,557.5 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 | 6,781,115 | |
| -1 | -6,781,115 |
Now, we try dividing 6,781,115 by 3:
6,781,115 ÷ 3 = 2,260,371.6667
If the quotient is a whole number, then 3 and 2,260,371.6667 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 | 6,781,115 | |
| -1 | -6,781,115 |
Let's try dividing by 4:
6,781,115 ÷ 4 = 1,695,278.75
If the quotient is a whole number, then 4 and 1,695,278.75 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 | 6,781,115 | |
| -1 | 6,781,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 139 | 695 | 887 | 1,529 | 4,435 | 7,645 | 9,757 | 48,785 | 123,293 | 616,465 | 1,356,223 | 6,781,115 |
| -1 | -5 | -11 | -55 | -139 | -695 | -887 | -1,529 | -4,435 | -7,645 | -9,757 | -48,785 | -123,293 | -616,465 | -1,356,223 | -6,781,115 |
Here are some more numbers to try:
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