A:
Positive:
1 x 2022516111 x 183865173 x 27705789 x 227249283 x 71467803 x 25187979 x 206593113 x 6497
Negative:
-1 x -20225161-11 x -1838651-73 x -277057-89 x -227249-283 x -71467-803 x -25187-979 x -20659-3113 x -6497
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 20,225,161, 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 | 20,225,161 | |
| -1 | -20,225,161 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 20,225,161.
Example:
1 x 20,225,161 = 20,225,161
and
-1 x -20,225,161 = 20,225,161
Notice both answers equal 20,225,161
With that explanation out of the way, let's continue. Next, we take the number 20,225,161 and divide it by 2:
20,225,161 ÷ 2 = 10,112,580.5
If the quotient is a whole number, then 2 and 10,112,580.5 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 | 20,225,161 | |
| -1 | -20,225,161 |
Now, we try dividing 20,225,161 by 3:
20,225,161 ÷ 3 = 6,741,720.3333
If the quotient is a whole number, then 3 and 6,741,720.3333 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 | 20,225,161 | |
| -1 | -20,225,161 |
Let's try dividing by 4:
20,225,161 ÷ 4 = 5,056,290.25
If the quotient is a whole number, then 4 and 5,056,290.25 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 | 20,225,161 | |
| -1 | 20,225,161 |
If you did it right, you will end up with this table:
| 1 | 11 | 73 | 89 | 283 | 803 | 979 | 3,113 | 6,497 | 20,659 | 25,187 | 71,467 | 227,249 | 277,057 | 1,838,651 | 20,225,161 |
| -1 | -11 | -73 | -89 | -283 | -803 | -979 | -3,113 | -6,497 | -20,659 | -25,187 | -71,467 | -227,249 | -277,057 | -1,838,651 | -20,225,161 |
Here are some more numbers to try:
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