A:
Positive:
1 x 861778255 x 1723556519 x 453567525 x 344711395 x 907135419 x 205675433 x 199025475 x 1814272095 x 411352165 x 398057961 x 108258227 x 10475
Negative:
-1 x -86177825-5 x -17235565-19 x -4535675-25 x -3447113-95 x -907135-419 x -205675-433 x -199025-475 x -181427-2095 x -41135-2165 x -39805-7961 x -10825-8227 x -10475
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 86,177,825, 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 | 86,177,825 | |
| -1 | -86,177,825 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 86,177,825.
Example:
1 x 86,177,825 = 86,177,825
and
-1 x -86,177,825 = 86,177,825
Notice both answers equal 86,177,825
With that explanation out of the way, let's continue. Next, we take the number 86,177,825 and divide it by 2:
86,177,825 ÷ 2 = 43,088,912.5
If the quotient is a whole number, then 2 and 43,088,912.5 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 | 86,177,825 | |
| -1 | -86,177,825 |
Now, we try dividing 86,177,825 by 3:
86,177,825 ÷ 3 = 28,725,941.6667
If the quotient is a whole number, then 3 and 28,725,941.6667 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 | 86,177,825 | |
| -1 | -86,177,825 |
Let's try dividing by 4:
86,177,825 ÷ 4 = 21,544,456.25
If the quotient is a whole number, then 4 and 21,544,456.25 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 | 86,177,825 | |
| -1 | 86,177,825 |
If you did it right, you will end up with this table:
| 1 | 5 | 19 | 25 | 95 | 419 | 433 | 475 | 2,095 | 2,165 | 7,961 | 8,227 | 10,475 | 10,825 | 39,805 | 41,135 | 181,427 | 199,025 | 205,675 | 907,135 | 3,447,113 | 4,535,675 | 17,235,565 | 86,177,825 |
| -1 | -5 | -19 | -25 | -95 | -419 | -433 | -475 | -2,095 | -2,165 | -7,961 | -8,227 | -10,475 | -10,825 | -39,805 | -41,135 | -181,427 | -199,025 | -205,675 | -907,135 | -3,447,113 | -4,535,675 | -17,235,565 | -86,177,825 |
Here are some more numbers to try:
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