A:
Positive:
1 x 1668769713 x 128366941 x 407017131 x 127387239 x 69823533 x 313091703 x 97993107 x 5371
Negative:
-1 x -16687697-13 x -1283669-41 x -407017-131 x -127387-239 x -69823-533 x -31309-1703 x -9799-3107 x -5371
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 16,687,697, 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 | 16,687,697 | |
| -1 | -16,687,697 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,687,697.
Example:
1 x 16,687,697 = 16,687,697
and
-1 x -16,687,697 = 16,687,697
Notice both answers equal 16,687,697
With that explanation out of the way, let's continue. Next, we take the number 16,687,697 and divide it by 2:
16,687,697 ÷ 2 = 8,343,848.5
If the quotient is a whole number, then 2 and 8,343,848.5 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 | 16,687,697 | |
| -1 | -16,687,697 |
Now, we try dividing 16,687,697 by 3:
16,687,697 ÷ 3 = 5,562,565.6667
If the quotient is a whole number, then 3 and 5,562,565.6667 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 | 16,687,697 | |
| -1 | -16,687,697 |
Let's try dividing by 4:
16,687,697 ÷ 4 = 4,171,924.25
If the quotient is a whole number, then 4 and 4,171,924.25 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 | 16,687,697 | |
| -1 | 16,687,697 |
If you did it right, you will end up with this table:
| 1 | 13 | 41 | 131 | 239 | 533 | 1,703 | 3,107 | 5,371 | 9,799 | 31,309 | 69,823 | 127,387 | 407,017 | 1,283,669 | 16,687,697 |
| -1 | -13 | -41 | -131 | -239 | -533 | -1,703 | -3,107 | -5,371 | -9,799 | -31,309 | -69,823 | -127,387 | -407,017 | -1,283,669 | -16,687,697 |
Here are some more numbers to try:
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