A:
Positive:
1 x 72425055 x 144850197 x 74665109 x 66445137 x 52865485 x 14933545 x 13289685 x 10573
Negative:
-1 x -7242505-5 x -1448501-97 x -74665-109 x -66445-137 x -52865-485 x -14933-545 x -13289-685 x -10573
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 7,242,505, 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 | 7,242,505 | |
| -1 | -7,242,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,242,505.
Example:
1 x 7,242,505 = 7,242,505
and
-1 x -7,242,505 = 7,242,505
Notice both answers equal 7,242,505
With that explanation out of the way, let's continue. Next, we take the number 7,242,505 and divide it by 2:
7,242,505 ÷ 2 = 3,621,252.5
If the quotient is a whole number, then 2 and 3,621,252.5 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 | 7,242,505 | |
| -1 | -7,242,505 |
Now, we try dividing 7,242,505 by 3:
7,242,505 ÷ 3 = 2,414,168.3333
If the quotient is a whole number, then 3 and 2,414,168.3333 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 | 7,242,505 | |
| -1 | -7,242,505 |
Let's try dividing by 4:
7,242,505 ÷ 4 = 1,810,626.25
If the quotient is a whole number, then 4 and 1,810,626.25 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 | 7,242,505 | |
| -1 | 7,242,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 97 | 109 | 137 | 485 | 545 | 685 | 10,573 | 13,289 | 14,933 | 52,865 | 66,445 | 74,665 | 1,448,501 | 7,242,505 |
| -1 | -5 | -97 | -109 | -137 | -485 | -545 | -685 | -10,573 | -13,289 | -14,933 | -52,865 | -66,445 | -74,665 | -1,448,501 | -7,242,505 |
Here are some more numbers to try:
Try the factor calculator