A:
Positive:
1 x 161644497 x 230920737 x 436877139 x 116291259 x 62411449 x 36001973 x 166133143 x 5143
Negative:
-1 x -16164449-7 x -2309207-37 x -436877-139 x -116291-259 x -62411-449 x -36001-973 x -16613-3143 x -5143
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 16,164,449, 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 | 16,164,449 | |
| -1 | -16,164,449 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,164,449.
Example:
1 x 16,164,449 = 16,164,449
and
-1 x -16,164,449 = 16,164,449
Notice both answers equal 16,164,449
With that explanation out of the way, let's continue. Next, we take the number 16,164,449 and divide it by 2:
16,164,449 ÷ 2 = 8,082,224.5
If the quotient is a whole number, then 2 and 8,082,224.5 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 | 16,164,449 | |
| -1 | -16,164,449 |
Now, we try dividing 16,164,449 by 3:
16,164,449 ÷ 3 = 5,388,149.6667
If the quotient is a whole number, then 3 and 5,388,149.6667 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 | 16,164,449 | |
| -1 | -16,164,449 |
Let's try dividing by 4:
16,164,449 ÷ 4 = 4,041,112.25
If the quotient is a whole number, then 4 and 4,041,112.25 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 | 16,164,449 | |
| -1 | 16,164,449 |
If you did it right, you will end up with this table:
| 1 | 7 | 37 | 139 | 259 | 449 | 973 | 3,143 | 5,143 | 16,613 | 36,001 | 62,411 | 116,291 | 436,877 | 2,309,207 | 16,164,449 |
| -1 | -7 | -37 | -139 | -259 | -449 | -973 | -3,143 | -5,143 | -16,613 | -36,001 | -62,411 | -116,291 | -436,877 | -2,309,207 | -16,164,449 |
Here are some more numbers to try:
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