A:
Positive:
1 x 74203855 x 14840777 x 106005535 x 21201141 x 180985205 x 36197287 x 258551435 x 5171
Negative:
-1 x -7420385-5 x -1484077-7 x -1060055-35 x -212011-41 x -180985-205 x -36197-287 x -25855-1435 x -5171
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 7,420,385, 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 | 7,420,385 | |
| -1 | -7,420,385 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,420,385.
Example:
1 x 7,420,385 = 7,420,385
and
-1 x -7,420,385 = 7,420,385
Notice both answers equal 7,420,385
With that explanation out of the way, let's continue. Next, we take the number 7,420,385 and divide it by 2:
7,420,385 ÷ 2 = 3,710,192.5
If the quotient is a whole number, then 2 and 3,710,192.5 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 | 7,420,385 | |
| -1 | -7,420,385 |
Now, we try dividing 7,420,385 by 3:
7,420,385 ÷ 3 = 2,473,461.6667
If the quotient is a whole number, then 3 and 2,473,461.6667 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 | 7,420,385 | |
| -1 | -7,420,385 |
Let's try dividing by 4:
7,420,385 ÷ 4 = 1,855,096.25
If the quotient is a whole number, then 4 and 1,855,096.25 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 | 7,420,385 | |
| -1 | 7,420,385 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 41 | 205 | 287 | 1,435 | 5,171 | 25,855 | 36,197 | 180,985 | 212,011 | 1,060,055 | 1,484,077 | 7,420,385 |
| -1 | -5 | -7 | -35 | -41 | -205 | -287 | -1,435 | -5,171 | -25,855 | -36,197 | -180,985 | -212,011 | -1,060,055 | -1,484,077 | -7,420,385 |
Here are some more numbers to try:
Try the factor calculator