A:
Positive:
1 x 856763055 x 1713526111 x 778875513 x 659048555 x 155775165 x 1318097143 x 599135715 x 119827
Negative:
-1 x -85676305-5 x -17135261-11 x -7788755-13 x -6590485-55 x -1557751-65 x -1318097-143 x -599135-715 x -119827
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 85,676,305, 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 | 85,676,305 | |
| -1 | -85,676,305 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,676,305.
Example:
1 x 85,676,305 = 85,676,305
and
-1 x -85,676,305 = 85,676,305
Notice both answers equal 85,676,305
With that explanation out of the way, let's continue. Next, we take the number 85,676,305 and divide it by 2:
85,676,305 ÷ 2 = 42,838,152.5
If the quotient is a whole number, then 2 and 42,838,152.5 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 | 85,676,305 | |
| -1 | -85,676,305 |
Now, we try dividing 85,676,305 by 3:
85,676,305 ÷ 3 = 28,558,768.3333
If the quotient is a whole number, then 3 and 28,558,768.3333 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 | 85,676,305 | |
| -1 | -85,676,305 |
Let's try dividing by 4:
85,676,305 ÷ 4 = 21,419,076.25
If the quotient is a whole number, then 4 and 21,419,076.25 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 | 85,676,305 | |
| -1 | 85,676,305 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 13 | 55 | 65 | 143 | 715 | 119,827 | 599,135 | 1,318,097 | 1,557,751 | 6,590,485 | 7,788,755 | 17,135,261 | 85,676,305 |
| -1 | -5 | -11 | -13 | -55 | -65 | -143 | -715 | -119,827 | -599,135 | -1,318,097 | -1,557,751 | -6,590,485 | -7,788,755 | -17,135,261 | -85,676,305 |
Here are some more numbers to try:
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