A:
Positive:
1 x 394563655 x 789127313 x 303510565 x 607021109 x 361985545 x 723971417 x 278455569 x 7085
Negative:
-1 x -39456365-5 x -7891273-13 x -3035105-65 x -607021-109 x -361985-545 x -72397-1417 x -27845-5569 x -7085
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 39,456,365, 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 | 39,456,365 | |
| -1 | -39,456,365 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 39,456,365.
Example:
1 x 39,456,365 = 39,456,365
and
-1 x -39,456,365 = 39,456,365
Notice both answers equal 39,456,365
With that explanation out of the way, let's continue. Next, we take the number 39,456,365 and divide it by 2:
39,456,365 ÷ 2 = 19,728,182.5
If the quotient is a whole number, then 2 and 19,728,182.5 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 | 39,456,365 | |
| -1 | -39,456,365 |
Now, we try dividing 39,456,365 by 3:
39,456,365 ÷ 3 = 13,152,121.6667
If the quotient is a whole number, then 3 and 13,152,121.6667 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 | 39,456,365 | |
| -1 | -39,456,365 |
Let's try dividing by 4:
39,456,365 ÷ 4 = 9,864,091.25
If the quotient is a whole number, then 4 and 9,864,091.25 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 | 39,456,365 | |
| -1 | 39,456,365 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 109 | 545 | 1,417 | 5,569 | 7,085 | 27,845 | 72,397 | 361,985 | 607,021 | 3,035,105 | 7,891,273 | 39,456,365 |
| -1 | -5 | -13 | -65 | -109 | -545 | -1,417 | -5,569 | -7,085 | -27,845 | -72,397 | -361,985 | -607,021 | -3,035,105 | -7,891,273 | -39,456,365 |
Here are some more numbers to try:
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