A:
Positive:
1 x 860275577 x 1228965111 x 782068777 x 1117241103 x 835219721 x 1193171133 x 759297931 x 10847
Negative:
-1 x -86027557-7 x -12289651-11 x -7820687-77 x -1117241-103 x -835219-721 x -119317-1133 x -75929-7931 x -10847
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 86,027,557, 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 | 86,027,557 | |
| -1 | -86,027,557 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 86,027,557.
Example:
1 x 86,027,557 = 86,027,557
and
-1 x -86,027,557 = 86,027,557
Notice both answers equal 86,027,557
With that explanation out of the way, let's continue. Next, we take the number 86,027,557 and divide it by 2:
86,027,557 ÷ 2 = 43,013,778.5
If the quotient is a whole number, then 2 and 43,013,778.5 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 | 86,027,557 | |
| -1 | -86,027,557 |
Now, we try dividing 86,027,557 by 3:
86,027,557 ÷ 3 = 28,675,852.3333
If the quotient is a whole number, then 3 and 28,675,852.3333 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 | 86,027,557 | |
| -1 | -86,027,557 |
Let's try dividing by 4:
86,027,557 ÷ 4 = 21,506,889.25
If the quotient is a whole number, then 4 and 21,506,889.25 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 | 86,027,557 | |
| -1 | 86,027,557 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 77 | 103 | 721 | 1,133 | 7,931 | 10,847 | 75,929 | 119,317 | 835,219 | 1,117,241 | 7,820,687 | 12,289,651 | 86,027,557 |
| -1 | -7 | -11 | -77 | -103 | -721 | -1,133 | -7,931 | -10,847 | -75,929 | -119,317 | -835,219 | -1,117,241 | -7,820,687 | -12,289,651 | -86,027,557 |
Here are some more numbers to try:
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