A:
Positive:
1 x 165167877 x 235954147 x 35142161 x 270767329 x 50203427 x 38681823 x 200692867 x 5761
Negative:
-1 x -16516787-7 x -2359541-47 x -351421-61 x -270767-329 x -50203-427 x -38681-823 x -20069-2867 x -5761
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 16,516,787, 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 | 16,516,787 | |
| -1 | -16,516,787 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,516,787.
Example:
1 x 16,516,787 = 16,516,787
and
-1 x -16,516,787 = 16,516,787
Notice both answers equal 16,516,787
With that explanation out of the way, let's continue. Next, we take the number 16,516,787 and divide it by 2:
16,516,787 ÷ 2 = 8,258,393.5
If the quotient is a whole number, then 2 and 8,258,393.5 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 | 16,516,787 | |
| -1 | -16,516,787 |
Now, we try dividing 16,516,787 by 3:
16,516,787 ÷ 3 = 5,505,595.6667
If the quotient is a whole number, then 3 and 5,505,595.6667 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 | 16,516,787 | |
| -1 | -16,516,787 |
Let's try dividing by 4:
16,516,787 ÷ 4 = 4,129,196.75
If the quotient is a whole number, then 4 and 4,129,196.75 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 | 16,516,787 | |
| -1 | 16,516,787 |
If you did it right, you will end up with this table:
| 1 | 7 | 47 | 61 | 329 | 427 | 823 | 2,867 | 5,761 | 20,069 | 38,681 | 50,203 | 270,767 | 351,421 | 2,359,541 | 16,516,787 |
| -1 | -7 | -47 | -61 | -329 | -427 | -823 | -2,867 | -5,761 | -20,069 | -38,681 | -50,203 | -270,767 | -351,421 | -2,359,541 | -16,516,787 |
Here are some more numbers to try:
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