A:
Positive:
1 x 78421455 x 156842953 x 147965101 x 77645265 x 29593293 x 26765505 x 155291465 x 5353
Negative:
-1 x -7842145-5 x -1568429-53 x -147965-101 x -77645-265 x -29593-293 x -26765-505 x -15529-1465 x -5353
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 7,842,145, 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 | 7,842,145 | |
| -1 | -7,842,145 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,842,145.
Example:
1 x 7,842,145 = 7,842,145
and
-1 x -7,842,145 = 7,842,145
Notice both answers equal 7,842,145
With that explanation out of the way, let's continue. Next, we take the number 7,842,145 and divide it by 2:
7,842,145 ÷ 2 = 3,921,072.5
If the quotient is a whole number, then 2 and 3,921,072.5 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 | 7,842,145 | |
| -1 | -7,842,145 |
Now, we try dividing 7,842,145 by 3:
7,842,145 ÷ 3 = 2,614,048.3333
If the quotient is a whole number, then 3 and 2,614,048.3333 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 | 7,842,145 | |
| -1 | -7,842,145 |
Let's try dividing by 4:
7,842,145 ÷ 4 = 1,960,536.25
If the quotient is a whole number, then 4 and 1,960,536.25 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 | 7,842,145 | |
| -1 | 7,842,145 |
If you did it right, you will end up with this table:
| 1 | 5 | 53 | 101 | 265 | 293 | 505 | 1,465 | 5,353 | 15,529 | 26,765 | 29,593 | 77,645 | 147,965 | 1,568,429 | 7,842,145 |
| -1 | -5 | -53 | -101 | -265 | -293 | -505 | -1,465 | -5,353 | -15,529 | -26,765 | -29,593 | -77,645 | -147,965 | -1,568,429 | -7,842,145 |
Here are some more numbers to try:
Try the factor calculator