A:
Positive:
1 x 193000997 x 275715713 x 148462391 x 212089131 x 147329917 x 210471619 x 119211703 x 11333
Negative:
-1 x -19300099-7 x -2757157-13 x -1484623-91 x -212089-131 x -147329-917 x -21047-1619 x -11921-1703 x -11333
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 19,300,099, 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 | 19,300,099 | |
| -1 | -19,300,099 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 19,300,099.
Example:
1 x 19,300,099 = 19,300,099
and
-1 x -19,300,099 = 19,300,099
Notice both answers equal 19,300,099
With that explanation out of the way, let's continue. Next, we take the number 19,300,099 and divide it by 2:
19,300,099 ÷ 2 = 9,650,049.5
If the quotient is a whole number, then 2 and 9,650,049.5 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 | 19,300,099 | |
| -1 | -19,300,099 |
Now, we try dividing 19,300,099 by 3:
19,300,099 ÷ 3 = 6,433,366.3333
If the quotient is a whole number, then 3 and 6,433,366.3333 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 | 19,300,099 | |
| -1 | -19,300,099 |
Let's try dividing by 4:
19,300,099 ÷ 4 = 4,825,024.75
If the quotient is a whole number, then 4 and 4,825,024.75 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 | 19,300,099 | |
| -1 | 19,300,099 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 91 | 131 | 917 | 1,619 | 1,703 | 11,333 | 11,921 | 21,047 | 147,329 | 212,089 | 1,484,623 | 2,757,157 | 19,300,099 |
| -1 | -7 | -13 | -91 | -131 | -917 | -1,619 | -1,703 | -11,333 | -11,921 | -21,047 | -147,329 | -212,089 | -1,484,623 | -2,757,157 | -19,300,099 |
Here are some more numbers to try:
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