A:
Positive:
1 x 64422441123 x 28009757163 x 3952297227 x 2837993757 x 8510233749 x 1718395221 x 12339117411 x 37001
Negative:
-1 x -644224411-23 x -28009757-163 x -3952297-227 x -2837993-757 x -851023-3749 x -171839-5221 x -123391-17411 x -37001
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 644,224,411, 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 | 644,224,411 | |
| -1 | -644,224,411 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 644,224,411.
Example:
1 x 644,224,411 = 644,224,411
and
-1 x -644,224,411 = 644,224,411
Notice both answers equal 644,224,411
With that explanation out of the way, let's continue. Next, we take the number 644,224,411 and divide it by 2:
644,224,411 ÷ 2 = 322,112,205.5
If the quotient is a whole number, then 2 and 322,112,205.5 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 | 644,224,411 | |
| -1 | -644,224,411 |
Now, we try dividing 644,224,411 by 3:
644,224,411 ÷ 3 = 214,741,470.3333
If the quotient is a whole number, then 3 and 214,741,470.3333 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 | 644,224,411 | |
| -1 | -644,224,411 |
Let's try dividing by 4:
644,224,411 ÷ 4 = 161,056,102.75
If the quotient is a whole number, then 4 and 161,056,102.75 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 | 644,224,411 | |
| -1 | 644,224,411 |
If you did it right, you will end up with this table:
| 1 | 23 | 163 | 227 | 757 | 3,749 | 5,221 | 17,411 | 37,001 | 123,391 | 171,839 | 851,023 | 2,837,993 | 3,952,297 | 28,009,757 | 644,224,411 |
| -1 | -23 | -163 | -227 | -757 | -3,749 | -5,221 | -17,411 | -37,001 | -123,391 | -171,839 | -851,023 | -2,837,993 | -3,952,297 | -28,009,757 | -644,224,411 |
Here are some more numbers to try:
Try the factor calculator