A:
Positive:
1 x 1718738155 x 3437476397 x 1771895389 x 441835485 x 354379911 x 1886651945 x 883674555 x 37733
Negative:
-1 x -171873815-5 x -34374763-97 x -1771895-389 x -441835-485 x -354379-911 x -188665-1945 x -88367-4555 x -37733
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 171,873,815, 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 | 171,873,815 | |
| -1 | -171,873,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 171,873,815.
Example:
1 x 171,873,815 = 171,873,815
and
-1 x -171,873,815 = 171,873,815
Notice both answers equal 171,873,815
With that explanation out of the way, let's continue. Next, we take the number 171,873,815 and divide it by 2:
171,873,815 ÷ 2 = 85,936,907.5
If the quotient is a whole number, then 2 and 85,936,907.5 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 | 171,873,815 | |
| -1 | -171,873,815 |
Now, we try dividing 171,873,815 by 3:
171,873,815 ÷ 3 = 57,291,271.6667
If the quotient is a whole number, then 3 and 57,291,271.6667 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 | 171,873,815 | |
| -1 | -171,873,815 |
Let's try dividing by 4:
171,873,815 ÷ 4 = 42,968,453.75
If the quotient is a whole number, then 4 and 42,968,453.75 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 | 171,873,815 | |
| -1 | 171,873,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 97 | 389 | 485 | 911 | 1,945 | 4,555 | 37,733 | 88,367 | 188,665 | 354,379 | 441,835 | 1,771,895 | 34,374,763 | 171,873,815 |
| -1 | -5 | -97 | -389 | -485 | -911 | -1,945 | -4,555 | -37,733 | -88,367 | -188,665 | -354,379 | -441,835 | -1,771,895 | -34,374,763 | -171,873,815 |
Here are some more numbers to try:
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