A:
Positive:
1 x 4051566731 x 130695741 x 988187127 x 319021251 x 1614171271 x 318773937 x 102915207 x 7781
Negative:
-1 x -40515667-31 x -1306957-41 x -988187-127 x -319021-251 x -161417-1271 x -31877-3937 x -10291-5207 x -7781
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 40,515,667, 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 | 40,515,667 | |
| -1 | -40,515,667 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,515,667.
Example:
1 x 40,515,667 = 40,515,667
and
-1 x -40,515,667 = 40,515,667
Notice both answers equal 40,515,667
With that explanation out of the way, let's continue. Next, we take the number 40,515,667 and divide it by 2:
40,515,667 ÷ 2 = 20,257,833.5
If the quotient is a whole number, then 2 and 20,257,833.5 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 | 40,515,667 | |
| -1 | -40,515,667 |
Now, we try dividing 40,515,667 by 3:
40,515,667 ÷ 3 = 13,505,222.3333
If the quotient is a whole number, then 3 and 13,505,222.3333 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 | 40,515,667 | |
| -1 | -40,515,667 |
Let's try dividing by 4:
40,515,667 ÷ 4 = 10,128,916.75
If the quotient is a whole number, then 4 and 10,128,916.75 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 | 40,515,667 | |
| -1 | 40,515,667 |
If you did it right, you will end up with this table:
| 1 | 31 | 41 | 127 | 251 | 1,271 | 3,937 | 5,207 | 7,781 | 10,291 | 31,877 | 161,417 | 319,021 | 988,187 | 1,306,957 | 40,515,667 |
| -1 | -31 | -41 | -127 | -251 | -1,271 | -3,937 | -5,207 | -7,781 | -10,291 | -31,877 | -161,417 | -319,021 | -988,187 | -1,306,957 | -40,515,667 |
Here are some more numbers to try:
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