A:
Positive:
1 x 401551255 x 803102523 x 174587525 x 1606205115 x 349175125 x 321241575 x 698352875 x 13967
Negative:
-1 x -40155125-5 x -8031025-23 x -1745875-25 x -1606205-115 x -349175-125 x -321241-575 x -69835-2875 x -13967
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 40,155,125, 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 | 40,155,125 | |
| -1 | -40,155,125 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 40,155,125.
Example:
1 x 40,155,125 = 40,155,125
and
-1 x -40,155,125 = 40,155,125
Notice both answers equal 40,155,125
With that explanation out of the way, let's continue. Next, we take the number 40,155,125 and divide it by 2:
40,155,125 ÷ 2 = 20,077,562.5
If the quotient is a whole number, then 2 and 20,077,562.5 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 | 40,155,125 | |
| -1 | -40,155,125 |
Now, we try dividing 40,155,125 by 3:
40,155,125 ÷ 3 = 13,385,041.6667
If the quotient is a whole number, then 3 and 13,385,041.6667 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 | 40,155,125 | |
| -1 | -40,155,125 |
Let's try dividing by 4:
40,155,125 ÷ 4 = 10,038,781.25
If the quotient is a whole number, then 4 and 10,038,781.25 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 | 40,155,125 | |
| -1 | 40,155,125 |
If you did it right, you will end up with this table:
| 1 | 5 | 23 | 25 | 115 | 125 | 575 | 2,875 | 13,967 | 69,835 | 321,241 | 349,175 | 1,606,205 | 1,745,875 | 8,031,025 | 40,155,125 |
| -1 | -5 | -23 | -25 | -115 | -125 | -575 | -2,875 | -13,967 | -69,835 | -321,241 | -349,175 | -1,606,205 | -1,745,875 | -8,031,025 | -40,155,125 |
Here are some more numbers to try:
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