A:
Positive:
1 x 402191655 x 80438337 x 574559535 x 1149119223 x 1803551115 x 360711561 x 257655153 x 7805
Negative:
-1 x -40219165-5 x -8043833-7 x -5745595-35 x -1149119-223 x -180355-1115 x -36071-1561 x -25765-5153 x -7805
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 40,219,165, 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 | 40,219,165 | |
| -1 | -40,219,165 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,219,165.
Example:
1 x 40,219,165 = 40,219,165
and
-1 x -40,219,165 = 40,219,165
Notice both answers equal 40,219,165
With that explanation out of the way, let's continue. Next, we take the number 40,219,165 and divide it by 2:
40,219,165 ÷ 2 = 20,109,582.5
If the quotient is a whole number, then 2 and 20,109,582.5 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 | 40,219,165 | |
| -1 | -40,219,165 |
Now, we try dividing 40,219,165 by 3:
40,219,165 ÷ 3 = 13,406,388.3333
If the quotient is a whole number, then 3 and 13,406,388.3333 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 | 40,219,165 | |
| -1 | -40,219,165 |
Let's try dividing by 4:
40,219,165 ÷ 4 = 10,054,791.25
If the quotient is a whole number, then 4 and 10,054,791.25 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 | 40,219,165 | |
| -1 | 40,219,165 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 223 | 1,115 | 1,561 | 5,153 | 7,805 | 25,765 | 36,071 | 180,355 | 1,149,119 | 5,745,595 | 8,043,833 | 40,219,165 |
| -1 | -5 | -7 | -35 | -223 | -1,115 | -1,561 | -5,153 | -7,805 | -25,765 | -36,071 | -180,355 | -1,149,119 | -5,745,595 | -8,043,833 | -40,219,165 |
Here are some more numbers to try:
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