A:
Positive:
1 x 19118944911 x 17380859167 x 1144847199 x 960751523 x 3655631837 x 1040772189 x 873415753 x 33233
Negative:
-1 x -191189449-11 x -17380859-167 x -1144847-199 x -960751-523 x -365563-1837 x -104077-2189 x -87341-5753 x -33233
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 191,189,449, 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 | 191,189,449 | |
| -1 | -191,189,449 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 191,189,449.
Example:
1 x 191,189,449 = 191,189,449
and
-1 x -191,189,449 = 191,189,449
Notice both answers equal 191,189,449
With that explanation out of the way, let's continue. Next, we take the number 191,189,449 and divide it by 2:
191,189,449 ÷ 2 = 95,594,724.5
If the quotient is a whole number, then 2 and 95,594,724.5 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 | 191,189,449 | |
| -1 | -191,189,449 |
Now, we try dividing 191,189,449 by 3:
191,189,449 ÷ 3 = 63,729,816.3333
If the quotient is a whole number, then 3 and 63,729,816.3333 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 | 191,189,449 | |
| -1 | -191,189,449 |
Let's try dividing by 4:
191,189,449 ÷ 4 = 47,797,362.25
If the quotient is a whole number, then 4 and 47,797,362.25 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 | 191,189,449 | |
| -1 | 191,189,449 |
If you did it right, you will end up with this table:
| 1 | 11 | 167 | 199 | 523 | 1,837 | 2,189 | 5,753 | 33,233 | 87,341 | 104,077 | 365,563 | 960,751 | 1,144,847 | 17,380,859 | 191,189,449 |
| -1 | -11 | -167 | -199 | -523 | -1,837 | -2,189 | -5,753 | -33,233 | -87,341 | -104,077 | -365,563 | -960,751 | -1,144,847 | -17,380,859 | -191,189,449 |
Here are some more numbers to try:
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