A:
Positive:
1 x 855901155 x 1711802313 x 658385565 x 1316771479 x 1786852395 x 357372749 x 311356227 x 13745
Negative:
-1 x -85590115-5 x -17118023-13 x -6583855-65 x -1316771-479 x -178685-2395 x -35737-2749 x -31135-6227 x -13745
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 85,590,115, 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 | 85,590,115 | |
| -1 | -85,590,115 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 85,590,115.
Example:
1 x 85,590,115 = 85,590,115
and
-1 x -85,590,115 = 85,590,115
Notice both answers equal 85,590,115
With that explanation out of the way, let's continue. Next, we take the number 85,590,115 and divide it by 2:
85,590,115 ÷ 2 = 42,795,057.5
If the quotient is a whole number, then 2 and 42,795,057.5 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 | 85,590,115 | |
| -1 | -85,590,115 |
Now, we try dividing 85,590,115 by 3:
85,590,115 ÷ 3 = 28,530,038.3333
If the quotient is a whole number, then 3 and 28,530,038.3333 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 | 85,590,115 | |
| -1 | -85,590,115 |
Let's try dividing by 4:
85,590,115 ÷ 4 = 21,397,528.75
If the quotient is a whole number, then 4 and 21,397,528.75 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 | 85,590,115 | |
| -1 | 85,590,115 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 479 | 2,395 | 2,749 | 6,227 | 13,745 | 31,135 | 35,737 | 178,685 | 1,316,771 | 6,583,855 | 17,118,023 | 85,590,115 |
| -1 | -5 | -13 | -65 | -479 | -2,395 | -2,749 | -6,227 | -13,745 | -31,135 | -35,737 | -178,685 | -1,316,771 | -6,583,855 | -17,118,023 | -85,590,115 |
Here are some more numbers to try:
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