A:
Positive:
1 x 6705216655 x 13410433311 x 6095651555 x 12191303617 x 10867453085 x 2173496787 x 9879519759 x 33935
Negative:
-1 x -670521665-5 x -134104333-11 x -60956515-55 x -12191303-617 x -1086745-3085 x -217349-6787 x -98795-19759 x -33935
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 670,521,665, 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 | 670,521,665 | |
| -1 | -670,521,665 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 670,521,665.
Example:
1 x 670,521,665 = 670,521,665
and
-1 x -670,521,665 = 670,521,665
Notice both answers equal 670,521,665
With that explanation out of the way, let's continue. Next, we take the number 670,521,665 and divide it by 2:
670,521,665 ÷ 2 = 335,260,832.5
If the quotient is a whole number, then 2 and 335,260,832.5 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 | 670,521,665 | |
| -1 | -670,521,665 |
Now, we try dividing 670,521,665 by 3:
670,521,665 ÷ 3 = 223,507,221.6667
If the quotient is a whole number, then 3 and 223,507,221.6667 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 | 670,521,665 | |
| -1 | -670,521,665 |
Let's try dividing by 4:
670,521,665 ÷ 4 = 167,630,416.25
If the quotient is a whole number, then 4 and 167,630,416.25 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 | 670,521,665 | |
| -1 | 670,521,665 |
If you did it right, you will end up with this table:
| 1 | 5 | 11 | 55 | 617 | 3,085 | 6,787 | 19,759 | 33,935 | 98,795 | 217,349 | 1,086,745 | 12,191,303 | 60,956,515 | 134,104,333 | 670,521,665 |
| -1 | -5 | -11 | -55 | -617 | -3,085 | -6,787 | -19,759 | -33,935 | -98,795 | -217,349 | -1,086,745 | -12,191,303 | -60,956,515 | -134,104,333 | -670,521,665 |
Here are some more numbers to try:
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