A:
Positive:
1 x 3212016055 x 6424032159 x 5444095197 x 1630465295 x 1088819985 x 3260935527 x 5811511623 x 27635
Negative:
-1 x -321201605-5 x -64240321-59 x -5444095-197 x -1630465-295 x -1088819-985 x -326093-5527 x -58115-11623 x -27635
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 321,201,605, 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 | 321,201,605 | |
| -1 | -321,201,605 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 321,201,605.
Example:
1 x 321,201,605 = 321,201,605
and
-1 x -321,201,605 = 321,201,605
Notice both answers equal 321,201,605
With that explanation out of the way, let's continue. Next, we take the number 321,201,605 and divide it by 2:
321,201,605 ÷ 2 = 160,600,802.5
If the quotient is a whole number, then 2 and 160,600,802.5 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 | 321,201,605 | |
| -1 | -321,201,605 |
Now, we try dividing 321,201,605 by 3:
321,201,605 ÷ 3 = 107,067,201.6667
If the quotient is a whole number, then 3 and 107,067,201.6667 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 | 321,201,605 | |
| -1 | -321,201,605 |
Let's try dividing by 4:
321,201,605 ÷ 4 = 80,300,401.25
If the quotient is a whole number, then 4 and 80,300,401.25 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 | 321,201,605 | |
| -1 | 321,201,605 |
If you did it right, you will end up with this table:
| 1 | 5 | 59 | 197 | 295 | 985 | 5,527 | 11,623 | 27,635 | 58,115 | 326,093 | 1,088,819 | 1,630,465 | 5,444,095 | 64,240,321 | 321,201,605 |
| -1 | -5 | -59 | -197 | -295 | -985 | -5,527 | -11,623 | -27,635 | -58,115 | -326,093 | -1,088,819 | -1,630,465 | -5,444,095 | -64,240,321 | -321,201,605 |
Here are some more numbers to try:
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