A:
Positive:
1 x 72415497 x 103450753 x 136633131 x 55279149 x 48601371 x 19519917 x 78971043 x 6943
Negative:
-1 x -7241549-7 x -1034507-53 x -136633-131 x -55279-149 x -48601-371 x -19519-917 x -7897-1043 x -6943
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 7,241,549, 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 | 7,241,549 | |
| -1 | -7,241,549 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,241,549.
Example:
1 x 7,241,549 = 7,241,549
and
-1 x -7,241,549 = 7,241,549
Notice both answers equal 7,241,549
With that explanation out of the way, let's continue. Next, we take the number 7,241,549 and divide it by 2:
7,241,549 ÷ 2 = 3,620,774.5
If the quotient is a whole number, then 2 and 3,620,774.5 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 | 7,241,549 | |
| -1 | -7,241,549 |
Now, we try dividing 7,241,549 by 3:
7,241,549 ÷ 3 = 2,413,849.6667
If the quotient is a whole number, then 3 and 2,413,849.6667 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 | 7,241,549 | |
| -1 | -7,241,549 |
Let's try dividing by 4:
7,241,549 ÷ 4 = 1,810,387.25
If the quotient is a whole number, then 4 and 1,810,387.25 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 | 7,241,549 | |
| -1 | 7,241,549 |
If you did it right, you will end up with this table:
| 1 | 7 | 53 | 131 | 149 | 371 | 917 | 1,043 | 6,943 | 7,897 | 19,519 | 48,601 | 55,279 | 136,633 | 1,034,507 | 7,241,549 |
| -1 | -7 | -53 | -131 | -149 | -371 | -917 | -1,043 | -6,943 | -7,897 | -19,519 | -48,601 | -55,279 | -136,633 | -1,034,507 | -7,241,549 |
Here are some more numbers to try:
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