A:
Positive:
1 x 15168797 x 21669713 x 11668379 x 1920191 x 16669211 x 7189553 x 27431027 x 1477
Negative:
-1 x -1516879-7 x -216697-13 x -116683-79 x -19201-91 x -16669-211 x -7189-553 x -2743-1027 x -1477
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 1,516,879, 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 | 1,516,879 | |
| -1 | -1,516,879 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,516,879.
Example:
1 x 1,516,879 = 1,516,879
and
-1 x -1,516,879 = 1,516,879
Notice both answers equal 1,516,879
With that explanation out of the way, let's continue. Next, we take the number 1,516,879 and divide it by 2:
1,516,879 ÷ 2 = 758,439.5
If the quotient is a whole number, then 2 and 758,439.5 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 | 1,516,879 | |
| -1 | -1,516,879 |
Now, we try dividing 1,516,879 by 3:
1,516,879 ÷ 3 = 505,626.3333
If the quotient is a whole number, then 3 and 505,626.3333 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 | 1,516,879 | |
| -1 | -1,516,879 |
Let's try dividing by 4:
1,516,879 ÷ 4 = 379,219.75
If the quotient is a whole number, then 4 and 379,219.75 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 | 1,516,879 | |
| -1 | 1,516,879 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 79 | 91 | 211 | 553 | 1,027 | 1,477 | 2,743 | 7,189 | 16,669 | 19,201 | 116,683 | 216,697 | 1,516,879 |
| -1 | -7 | -13 | -79 | -91 | -211 | -553 | -1,027 | -1,477 | -2,743 | -7,189 | -16,669 | -19,201 | -116,683 | -216,697 | -1,516,879 |
Here are some more numbers to try:
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