A:
Positive:
1 x 853086255 x 1706172525 x 3412345125 x 682469251 x 3398751255 x 679752719 x 313756275 x 13595
Negative:
-1 x -85308625-5 x -17061725-25 x -3412345-125 x -682469-251 x -339875-1255 x -67975-2719 x -31375-6275 x -13595
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 85,308,625, 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 | 85,308,625 | |
| -1 | -85,308,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,308,625.
Example:
1 x 85,308,625 = 85,308,625
and
-1 x -85,308,625 = 85,308,625
Notice both answers equal 85,308,625
With that explanation out of the way, let's continue. Next, we take the number 85,308,625 and divide it by 2:
85,308,625 ÷ 2 = 42,654,312.5
If the quotient is a whole number, then 2 and 42,654,312.5 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 | 85,308,625 | |
| -1 | -85,308,625 |
Now, we try dividing 85,308,625 by 3:
85,308,625 ÷ 3 = 28,436,208.3333
If the quotient is a whole number, then 3 and 28,436,208.3333 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 | 85,308,625 | |
| -1 | -85,308,625 |
Let's try dividing by 4:
85,308,625 ÷ 4 = 21,327,156.25
If the quotient is a whole number, then 4 and 21,327,156.25 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 | 85,308,625 | |
| -1 | 85,308,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 251 | 1,255 | 2,719 | 6,275 | 13,595 | 31,375 | 67,975 | 339,875 | 682,469 | 3,412,345 | 17,061,725 | 85,308,625 |
| -1 | -5 | -25 | -125 | -251 | -1,255 | -2,719 | -6,275 | -13,595 | -31,375 | -67,975 | -339,875 | -682,469 | -3,412,345 | -17,061,725 | -85,308,625 |
Here are some more numbers to try:
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