A:
Positive:
1 x 162251817 x 231788329 x 559489203 x 79927257 x 63133311 x 521711799 x 90192177 x 7453
Negative:
-1 x -16225181-7 x -2317883-29 x -559489-203 x -79927-257 x -63133-311 x -52171-1799 x -9019-2177 x -7453
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 16,225,181, 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 | 16,225,181 | |
| -1 | -16,225,181 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 16,225,181.
Example:
1 x 16,225,181 = 16,225,181
and
-1 x -16,225,181 = 16,225,181
Notice both answers equal 16,225,181
With that explanation out of the way, let's continue. Next, we take the number 16,225,181 and divide it by 2:
16,225,181 ÷ 2 = 8,112,590.5
If the quotient is a whole number, then 2 and 8,112,590.5 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 | 16,225,181 | |
| -1 | -16,225,181 |
Now, we try dividing 16,225,181 by 3:
16,225,181 ÷ 3 = 5,408,393.6667
If the quotient is a whole number, then 3 and 5,408,393.6667 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 | 16,225,181 | |
| -1 | -16,225,181 |
Let's try dividing by 4:
16,225,181 ÷ 4 = 4,056,295.25
If the quotient is a whole number, then 4 and 4,056,295.25 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 | 16,225,181 | |
| -1 | 16,225,181 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 203 | 257 | 311 | 1,799 | 2,177 | 7,453 | 9,019 | 52,171 | 63,133 | 79,927 | 559,489 | 2,317,883 | 16,225,181 |
| -1 | -7 | -29 | -203 | -257 | -311 | -1,799 | -2,177 | -7,453 | -9,019 | -52,171 | -63,133 | -79,927 | -559,489 | -2,317,883 | -16,225,181 |
Here are some more numbers to try:
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