A:
Positive:
1 x 189752997 x 271075723 x 82501349 x 387251113 x 167923149 x 127351161 x 117859791 x 239891043 x 181931127 x 168372599 x 73013427 x 5537
Negative:
-1 x -18975299-7 x -2710757-23 x -825013-49 x -387251-113 x -167923-149 x -127351-161 x -117859-791 x -23989-1043 x -18193-1127 x -16837-2599 x -7301-3427 x -5537
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 18,975,299, 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 | 18,975,299 | |
| -1 | -18,975,299 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 18,975,299.
Example:
1 x 18,975,299 = 18,975,299
and
-1 x -18,975,299 = 18,975,299
Notice both answers equal 18,975,299
With that explanation out of the way, let's continue. Next, we take the number 18,975,299 and divide it by 2:
18,975,299 ÷ 2 = 9,487,649.5
If the quotient is a whole number, then 2 and 9,487,649.5 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 | 18,975,299 | |
| -1 | -18,975,299 |
Now, we try dividing 18,975,299 by 3:
18,975,299 ÷ 3 = 6,325,099.6667
If the quotient is a whole number, then 3 and 6,325,099.6667 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 | 18,975,299 | |
| -1 | -18,975,299 |
Let's try dividing by 4:
18,975,299 ÷ 4 = 4,743,824.75
If the quotient is a whole number, then 4 and 4,743,824.75 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 | 18,975,299 | |
| -1 | 18,975,299 |
If you did it right, you will end up with this table:
| 1 | 7 | 23 | 49 | 113 | 149 | 161 | 791 | 1,043 | 1,127 | 2,599 | 3,427 | 5,537 | 7,301 | 16,837 | 18,193 | 23,989 | 117,859 | 127,351 | 167,923 | 387,251 | 825,013 | 2,710,757 | 18,975,299 |
| -1 | -7 | -23 | -49 | -113 | -149 | -161 | -791 | -1,043 | -1,127 | -2,599 | -3,427 | -5,537 | -7,301 | -16,837 | -18,193 | -23,989 | -117,859 | -127,351 | -167,923 | -387,251 | -825,013 | -2,710,757 | -18,975,299 |
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