A:
Positive:
1 x 1919360311 x 174487313 x 147643179 x 242957143 x 134221869 x 220871027 x 186891699 x 11297
Negative:
-1 x -19193603-11 x -1744873-13 x -1476431-79 x -242957-143 x -134221-869 x -22087-1027 x -18689-1699 x -11297
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 19,193,603, 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 | 19,193,603 | |
| -1 | -19,193,603 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,193,603.
Example:
1 x 19,193,603 = 19,193,603
and
-1 x -19,193,603 = 19,193,603
Notice both answers equal 19,193,603
With that explanation out of the way, let's continue. Next, we take the number 19,193,603 and divide it by 2:
19,193,603 ÷ 2 = 9,596,801.5
If the quotient is a whole number, then 2 and 9,596,801.5 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 | 19,193,603 | |
| -1 | -19,193,603 |
Now, we try dividing 19,193,603 by 3:
19,193,603 ÷ 3 = 6,397,867.6667
If the quotient is a whole number, then 3 and 6,397,867.6667 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 | 19,193,603 | |
| -1 | -19,193,603 |
Let's try dividing by 4:
19,193,603 ÷ 4 = 4,798,400.75
If the quotient is a whole number, then 4 and 4,798,400.75 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 | 19,193,603 | |
| -1 | 19,193,603 |
If you did it right, you will end up with this table:
| 1 | 11 | 13 | 79 | 143 | 869 | 1,027 | 1,699 | 11,297 | 18,689 | 22,087 | 134,221 | 242,957 | 1,476,431 | 1,744,873 | 19,193,603 |
| -1 | -11 | -13 | -79 | -143 | -869 | -1,027 | -1,699 | -11,297 | -18,689 | -22,087 | -134,221 | -242,957 | -1,476,431 | -1,744,873 | -19,193,603 |
Here are some more numbers to try:
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