A:
Positive:
1 x 13568677111 x 1233516119 x 7141409209 x 649219401 x 3383711619 x 838094411 x 307617619 x 17809
Negative:
-1 x -135686771-11 x -12335161-19 x -7141409-209 x -649219-401 x -338371-1619 x -83809-4411 x -30761-7619 x -17809
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 135,686,771, 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 | 135,686,771 | |
| -1 | -135,686,771 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 135,686,771.
Example:
1 x 135,686,771 = 135,686,771
and
-1 x -135,686,771 = 135,686,771
Notice both answers equal 135,686,771
With that explanation out of the way, let's continue. Next, we take the number 135,686,771 and divide it by 2:
135,686,771 ÷ 2 = 67,843,385.5
If the quotient is a whole number, then 2 and 67,843,385.5 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 | 135,686,771 | |
| -1 | -135,686,771 |
Now, we try dividing 135,686,771 by 3:
135,686,771 ÷ 3 = 45,228,923.6667
If the quotient is a whole number, then 3 and 45,228,923.6667 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 | 135,686,771 | |
| -1 | -135,686,771 |
Let's try dividing by 4:
135,686,771 ÷ 4 = 33,921,692.75
If the quotient is a whole number, then 4 and 33,921,692.75 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 | 135,686,771 | |
| -1 | 135,686,771 |
If you did it right, you will end up with this table:
| 1 | 11 | 19 | 209 | 401 | 1,619 | 4,411 | 7,619 | 17,809 | 30,761 | 83,809 | 338,371 | 649,219 | 7,141,409 | 12,335,161 | 135,686,771 |
| -1 | -11 | -19 | -209 | -401 | -1,619 | -4,411 | -7,619 | -17,809 | -30,761 | -83,809 | -338,371 | -649,219 | -7,141,409 | -12,335,161 | -135,686,771 |
Here are some more numbers to try:
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