A:
Positive:
1 x 16887855 x 3377577 x 24125535 x 4825149 x 3446561 x 27685113 x 14945245 x 6893305 x 5537427 x 3955565 x 2989791 x 2135
Negative:
-1 x -1688785-5 x -337757-7 x -241255-35 x -48251-49 x -34465-61 x -27685-113 x -14945-245 x -6893-305 x -5537-427 x -3955-565 x -2989-791 x -2135
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 1,688,785, 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 | 1,688,785 | |
| -1 | -1,688,785 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 1,688,785.
Example:
1 x 1,688,785 = 1,688,785
and
-1 x -1,688,785 = 1,688,785
Notice both answers equal 1,688,785
With that explanation out of the way, let's continue. Next, we take the number 1,688,785 and divide it by 2:
1,688,785 ÷ 2 = 844,392.5
If the quotient is a whole number, then 2 and 844,392.5 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 | 1,688,785 | |
| -1 | -1,688,785 |
Now, we try dividing 1,688,785 by 3:
1,688,785 ÷ 3 = 562,928.3333
If the quotient is a whole number, then 3 and 562,928.3333 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 | 1,688,785 | |
| -1 | -1,688,785 |
Let's try dividing by 4:
1,688,785 ÷ 4 = 422,196.25
If the quotient is a whole number, then 4 and 422,196.25 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 | 1,688,785 | |
| -1 | 1,688,785 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 49 | 61 | 113 | 245 | 305 | 427 | 565 | 791 | 2,135 | 2,989 | 3,955 | 5,537 | 6,893 | 14,945 | 27,685 | 34,465 | 48,251 | 241,255 | 337,757 | 1,688,785 |
| -1 | -5 | -7 | -35 | -49 | -61 | -113 | -245 | -305 | -427 | -565 | -791 | -2,135 | -2,989 | -3,955 | -5,537 | -6,893 | -14,945 | -27,685 | -34,465 | -48,251 | -241,255 | -337,757 | -1,688,785 |
Here are some more numbers to try:
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