A:
Positive:
1 x 401159155 x 80231837 x 573084535 x 114616967 x 598745335 x 119749469 x 855352345 x 17107
Negative:
-1 x -40115915-5 x -8023183-7 x -5730845-35 x -1146169-67 x -598745-335 x -119749-469 x -85535-2345 x -17107
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 40,115,915, 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 | 40,115,915 | |
| -1 | -40,115,915 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,115,915.
Example:
1 x 40,115,915 = 40,115,915
and
-1 x -40,115,915 = 40,115,915
Notice both answers equal 40,115,915
With that explanation out of the way, let's continue. Next, we take the number 40,115,915 and divide it by 2:
40,115,915 ÷ 2 = 20,057,957.5
If the quotient is a whole number, then 2 and 20,057,957.5 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 | 40,115,915 | |
| -1 | -40,115,915 |
Now, we try dividing 40,115,915 by 3:
40,115,915 ÷ 3 = 13,371,971.6667
If the quotient is a whole number, then 3 and 13,371,971.6667 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 | 40,115,915 | |
| -1 | -40,115,915 |
Let's try dividing by 4:
40,115,915 ÷ 4 = 10,028,978.75
If the quotient is a whole number, then 4 and 10,028,978.75 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 | 40,115,915 | |
| -1 | 40,115,915 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 67 | 335 | 469 | 2,345 | 17,107 | 85,535 | 119,749 | 598,745 | 1,146,169 | 5,730,845 | 8,023,183 | 40,115,915 |
| -1 | -5 | -7 | -35 | -67 | -335 | -469 | -2,345 | -17,107 | -85,535 | -119,749 | -598,745 | -1,146,169 | -5,730,845 | -8,023,183 | -40,115,915 |
Here are some more numbers to try:
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