A:
Positive:
1 x 71726155 x 143452343 x 16680573 x 98255215 x 33361365 x 19651457 x 156952285 x 3139
Negative:
-1 x -7172615-5 x -1434523-43 x -166805-73 x -98255-215 x -33361-365 x -19651-457 x -15695-2285 x -3139
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 7,172,615, 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 | 7,172,615 | |
| -1 | -7,172,615 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,172,615.
Example:
1 x 7,172,615 = 7,172,615
and
-1 x -7,172,615 = 7,172,615
Notice both answers equal 7,172,615
With that explanation out of the way, let's continue. Next, we take the number 7,172,615 and divide it by 2:
7,172,615 ÷ 2 = 3,586,307.5
If the quotient is a whole number, then 2 and 3,586,307.5 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 | 7,172,615 | |
| -1 | -7,172,615 |
Now, we try dividing 7,172,615 by 3:
7,172,615 ÷ 3 = 2,390,871.6667
If the quotient is a whole number, then 3 and 2,390,871.6667 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 | 7,172,615 | |
| -1 | -7,172,615 |
Let's try dividing by 4:
7,172,615 ÷ 4 = 1,793,153.75
If the quotient is a whole number, then 4 and 1,793,153.75 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 | 7,172,615 | |
| -1 | 7,172,615 |
If you did it right, you will end up with this table:
| 1 | 5 | 43 | 73 | 215 | 365 | 457 | 2,285 | 3,139 | 15,695 | 19,651 | 33,361 | 98,255 | 166,805 | 1,434,523 | 7,172,615 |
| -1 | -5 | -43 | -73 | -215 | -365 | -457 | -2,285 | -3,139 | -15,695 | -19,651 | -33,361 | -98,255 | -166,805 | -1,434,523 | -7,172,615 |
Here are some more numbers to try:
Try the factor calculator