A:
Positive:
1 x 8710000755 x 17420001511 x 7918182525 x 3484000355 x 15836365275 x 3167273
Negative:
-1 x -871000075-5 x -174200015-11 x -79181825-25 x -34840003-55 x -15836365-275 x -3167273
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 871,000,075, 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 | 871,000,075 | |
| -1 | -871,000,075 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 871,000,075.
Example:
1 x 871,000,075 = 871,000,075
and
-1 x -871,000,075 = 871,000,075
Notice both answers equal 871,000,075
With that explanation out of the way, let's continue. Next, we take the number 871,000,075 and divide it by 2:
871,000,075 ÷ 2 = 435,500,037.5
If the quotient is a whole number, then 2 and 435,500,037.5 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 | 871,000,075 | |
| -1 | -871,000,075 |
Now, we try dividing 871,000,075 by 3:
871,000,075 ÷ 3 = 290,333,358.3333
If the quotient is a whole number, then 3 and 290,333,358.3333 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 | 871,000,075 | |
| -1 | -871,000,075 |
Let's try dividing by 4:
871,000,075 ÷ 4 = 217,750,018.75
If the quotient is a whole number, then 4 and 217,750,018.75 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 | 871,000,075 | |
| -1 | 871,000,075 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 25 | 55 | 275 | 3,167,273 | 15,836,365 | 34,840,003 | 79,181,825 | 174,200,015 | 871,000,075 |
| -1 | -5 | -11 | -25 | -55 | -275 | -3,167,273 | -15,836,365 | -34,840,003 | -79,181,825 | -174,200,015 | -871,000,075 |
Here are some more numbers to try:
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