A:
Positive:
1 x 161633577 x 230905119 x 85070353 x 304969133 x 121529371 x 435671007 x 160512293 x 7049
Negative:
-1 x -16163357-7 x -2309051-19 x -850703-53 x -304969-133 x -121529-371 x -43567-1007 x -16051-2293 x -7049
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 16,163,357, 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 | 16,163,357 | |
| -1 | -16,163,357 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,163,357.
Example:
1 x 16,163,357 = 16,163,357
and
-1 x -16,163,357 = 16,163,357
Notice both answers equal 16,163,357
With that explanation out of the way, let's continue. Next, we take the number 16,163,357 and divide it by 2:
16,163,357 ÷ 2 = 8,081,678.5
If the quotient is a whole number, then 2 and 8,081,678.5 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 | 16,163,357 | |
| -1 | -16,163,357 |
Now, we try dividing 16,163,357 by 3:
16,163,357 ÷ 3 = 5,387,785.6667
If the quotient is a whole number, then 3 and 5,387,785.6667 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 | 16,163,357 | |
| -1 | -16,163,357 |
Let's try dividing by 4:
16,163,357 ÷ 4 = 4,040,839.25
If the quotient is a whole number, then 4 and 4,040,839.25 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 | 16,163,357 | |
| -1 | 16,163,357 |
If you did it right, you will end up with this table:
| 1 | 7 | 19 | 53 | 133 | 371 | 1,007 | 2,293 | 7,049 | 16,051 | 43,567 | 121,529 | 304,969 | 850,703 | 2,309,051 | 16,163,357 |
| -1 | -7 | -19 | -53 | -133 | -371 | -1,007 | -2,293 | -7,049 | -16,051 | -43,567 | -121,529 | -304,969 | -850,703 | -2,309,051 | -16,163,357 |
Here are some more numbers to try:
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