A:
Positive:
1 x 8650638711 x 786421717 x 508861173 x 1185019187 x 462601803 x 1077291241 x 697076337 x 13651
Negative:
-1 x -86506387-11 x -7864217-17 x -5088611-73 x -1185019-187 x -462601-803 x -107729-1241 x -69707-6337 x -13651
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 86,506,387, 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 | 86,506,387 | |
| -1 | -86,506,387 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 86,506,387.
Example:
1 x 86,506,387 = 86,506,387
and
-1 x -86,506,387 = 86,506,387
Notice both answers equal 86,506,387
With that explanation out of the way, let's continue. Next, we take the number 86,506,387 and divide it by 2:
86,506,387 ÷ 2 = 43,253,193.5
If the quotient is a whole number, then 2 and 43,253,193.5 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 | 86,506,387 | |
| -1 | -86,506,387 |
Now, we try dividing 86,506,387 by 3:
86,506,387 ÷ 3 = 28,835,462.3333
If the quotient is a whole number, then 3 and 28,835,462.3333 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 | 86,506,387 | |
| -1 | -86,506,387 |
Let's try dividing by 4:
86,506,387 ÷ 4 = 21,626,596.75
If the quotient is a whole number, then 4 and 21,626,596.75 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 | 86,506,387 | |
| -1 | 86,506,387 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 73 | 187 | 803 | 1,241 | 6,337 | 13,651 | 69,707 | 107,729 | 462,601 | 1,185,019 | 5,088,611 | 7,864,217 | 86,506,387 |
| -1 | -11 | -17 | -73 | -187 | -803 | -1,241 | -6,337 | -13,651 | -69,707 | -107,729 | -462,601 | -1,185,019 | -5,088,611 | -7,864,217 | -86,506,387 |
Here are some more numbers to try:
Try the factor calculator