A:
Positive:
1 x 1918771255 x 3837542511 x 1744337525 x 767508555 x 3488675125 x 1535017275 x 6977351375 x 139547
Negative:
-1 x -191877125-5 x -38375425-11 x -17443375-25 x -7675085-55 x -3488675-125 x -1535017-275 x -697735-1375 x -139547
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 191,877,125, 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 | 191,877,125 | |
| -1 | -191,877,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 191,877,125.
Example:
1 x 191,877,125 = 191,877,125
and
-1 x -191,877,125 = 191,877,125
Notice both answers equal 191,877,125
With that explanation out of the way, let's continue. Next, we take the number 191,877,125 and divide it by 2:
191,877,125 ÷ 2 = 95,938,562.5
If the quotient is a whole number, then 2 and 95,938,562.5 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 | 191,877,125 | |
| -1 | -191,877,125 |
Now, we try dividing 191,877,125 by 3:
191,877,125 ÷ 3 = 63,959,041.6667
If the quotient is a whole number, then 3 and 63,959,041.6667 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 | 191,877,125 | |
| -1 | -191,877,125 |
Let's try dividing by 4:
191,877,125 ÷ 4 = 47,969,281.25
If the quotient is a whole number, then 4 and 47,969,281.25 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 | 191,877,125 | |
| -1 | 191,877,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 125 | 275 | 1,375 | 139,547 | 697,735 | 1,535,017 | 3,488,675 | 7,675,085 | 17,443,375 | 38,375,425 | 191,877,125 |
| -1 | -5 | -11 | -25 | -55 | -125 | -275 | -1,375 | -139,547 | -697,735 | -1,535,017 | -3,488,675 | -7,675,085 | -17,443,375 | -38,375,425 | -191,877,125 |
Here are some more numbers to try:
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