A:
Positive:
1 x 1910203617 x 2728862329 x 658690947 x 4064263203 x 940987329 x 5806091363 x 1401479541 x 20021
Negative:
-1 x -191020361-7 x -27288623-29 x -6586909-47 x -4064263-203 x -940987-329 x -580609-1363 x -140147-9541 x -20021
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 191,020,361, 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 | 191,020,361 | |
| -1 | -191,020,361 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 191,020,361.
Example:
1 x 191,020,361 = 191,020,361
and
-1 x -191,020,361 = 191,020,361
Notice both answers equal 191,020,361
With that explanation out of the way, let's continue. Next, we take the number 191,020,361 and divide it by 2:
191,020,361 ÷ 2 = 95,510,180.5
If the quotient is a whole number, then 2 and 95,510,180.5 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 | 191,020,361 | |
| -1 | -191,020,361 |
Now, we try dividing 191,020,361 by 3:
191,020,361 ÷ 3 = 63,673,453.6667
If the quotient is a whole number, then 3 and 63,673,453.6667 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 | 191,020,361 | |
| -1 | -191,020,361 |
Let's try dividing by 4:
191,020,361 ÷ 4 = 47,755,090.25
If the quotient is a whole number, then 4 and 47,755,090.25 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 | 191,020,361 | |
| -1 | 191,020,361 |
If you did it right, you will end up with this table:
| 1 | 7 | 29 | 47 | 203 | 329 | 1,363 | 9,541 | 20,021 | 140,147 | 580,609 | 940,987 | 4,064,263 | 6,586,909 | 27,288,623 | 191,020,361 |
| -1 | -7 | -29 | -47 | -203 | -329 | -1,363 | -9,541 | -20,021 | -140,147 | -580,609 | -940,987 | -4,064,263 | -6,586,909 | -27,288,623 | -191,020,361 |
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