A:
Positive:
1 x 407836255 x 815672525 x 1631345125 x 326269509 x 80125641 x 636252545 x 160253205 x 12725
Negative:
-1 x -40783625-5 x -8156725-25 x -1631345-125 x -326269-509 x -80125-641 x -63625-2545 x -16025-3205 x -12725
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 40,783,625, 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 | 40,783,625 | |
| -1 | -40,783,625 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,783,625.
Example:
1 x 40,783,625 = 40,783,625
and
-1 x -40,783,625 = 40,783,625
Notice both answers equal 40,783,625
With that explanation out of the way, let's continue. Next, we take the number 40,783,625 and divide it by 2:
40,783,625 ÷ 2 = 20,391,812.5
If the quotient is a whole number, then 2 and 20,391,812.5 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 | 40,783,625 | |
| -1 | -40,783,625 |
Now, we try dividing 40,783,625 by 3:
40,783,625 ÷ 3 = 13,594,541.6667
If the quotient is a whole number, then 3 and 13,594,541.6667 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 | 40,783,625 | |
| -1 | -40,783,625 |
Let's try dividing by 4:
40,783,625 ÷ 4 = 10,195,906.25
If the quotient is a whole number, then 4 and 10,195,906.25 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 | 40,783,625 | |
| -1 | 40,783,625 |
If you did it right, you will end up with this table:
| 1 | 5 | 25 | 125 | 509 | 641 | 2,545 | 3,205 | 12,725 | 16,025 | 63,625 | 80,125 | 326,269 | 1,631,345 | 8,156,725 | 40,783,625 |
| -1 | -5 | -25 | -125 | -509 | -641 | -2,545 | -3,205 | -12,725 | -16,025 | -63,625 | -80,125 | -326,269 | -1,631,345 | -8,156,725 | -40,783,625 |
Here are some more numbers to try:
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