A:
Positive:
1 x 72252055 x 144504113 x 55578529 x 24914565 x 111157145 x 49829377 x 191651885 x 3833
Negative:
-1 x -7225205-5 x -1445041-13 x -555785-29 x -249145-65 x -111157-145 x -49829-377 x -19165-1885 x -3833
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 7,225,205, 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 | 7,225,205 | |
| -1 | -7,225,205 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,225,205.
Example:
1 x 7,225,205 = 7,225,205
and
-1 x -7,225,205 = 7,225,205
Notice both answers equal 7,225,205
With that explanation out of the way, let's continue. Next, we take the number 7,225,205 and divide it by 2:
7,225,205 ÷ 2 = 3,612,602.5
If the quotient is a whole number, then 2 and 3,612,602.5 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 | 7,225,205 | |
| -1 | -7,225,205 |
Now, we try dividing 7,225,205 by 3:
7,225,205 ÷ 3 = 2,408,401.6667
If the quotient is a whole number, then 3 and 2,408,401.6667 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 | 7,225,205 | |
| -1 | -7,225,205 |
Let's try dividing by 4:
7,225,205 ÷ 4 = 1,806,301.25
If the quotient is a whole number, then 4 and 1,806,301.25 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 | 7,225,205 | |
| -1 | 7,225,205 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 29 | 65 | 145 | 377 | 1,885 | 3,833 | 19,165 | 49,829 | 111,157 | 249,145 | 555,785 | 1,445,041 | 7,225,205 |
| -1 | -5 | -13 | -29 | -65 | -145 | -377 | -1,885 | -3,833 | -19,165 | -49,829 | -111,157 | -249,145 | -555,785 | -1,445,041 | -7,225,205 |
Here are some more numbers to try:
Try the factor calculator