A:
Positive:
1 x 851502555 x 1703005123 x 3702185109 x 781195115 x 740437545 x 1562392507 x 339656793 x 12535
Negative:
-1 x -85150255-5 x -17030051-23 x -3702185-109 x -781195-115 x -740437-545 x -156239-2507 x -33965-6793 x -12535
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 85,150,255, 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 | 85,150,255 | |
| -1 | -85,150,255 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,150,255.
Example:
1 x 85,150,255 = 85,150,255
and
-1 x -85,150,255 = 85,150,255
Notice both answers equal 85,150,255
With that explanation out of the way, let's continue. Next, we take the number 85,150,255 and divide it by 2:
85,150,255 ÷ 2 = 42,575,127.5
If the quotient is a whole number, then 2 and 42,575,127.5 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 | 85,150,255 | |
| -1 | -85,150,255 |
Now, we try dividing 85,150,255 by 3:
85,150,255 ÷ 3 = 28,383,418.3333
If the quotient is a whole number, then 3 and 28,383,418.3333 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 | 85,150,255 | |
| -1 | -85,150,255 |
Let's try dividing by 4:
85,150,255 ÷ 4 = 21,287,563.75
If the quotient is a whole number, then 4 and 21,287,563.75 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 | 85,150,255 | |
| -1 | 85,150,255 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 109 | 115 | 545 | 2,507 | 6,793 | 12,535 | 33,965 | 156,239 | 740,437 | 781,195 | 3,702,185 | 17,030,051 | 85,150,255 |
| -1 | -5 | -23 | -109 | -115 | -545 | -2,507 | -6,793 | -12,535 | -33,965 | -156,239 | -740,437 | -781,195 | -3,702,185 | -17,030,051 | -85,150,255 |
Here are some more numbers to try:
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