A:
Positive:
1 x 76205155 x 15241037 x 108864535 x 217729239 x 31885911 x 83651195 x 63771673 x 4555
Negative:
-1 x -7620515-5 x -1524103-7 x -1088645-35 x -217729-239 x -31885-911 x -8365-1195 x -6377-1673 x -4555
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 7,620,515, 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 | 7,620,515 | |
| -1 | -7,620,515 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,620,515.
Example:
1 x 7,620,515 = 7,620,515
and
-1 x -7,620,515 = 7,620,515
Notice both answers equal 7,620,515
With that explanation out of the way, let's continue. Next, we take the number 7,620,515 and divide it by 2:
7,620,515 ÷ 2 = 3,810,257.5
If the quotient is a whole number, then 2 and 3,810,257.5 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 | 7,620,515 | |
| -1 | -7,620,515 |
Now, we try dividing 7,620,515 by 3:
7,620,515 ÷ 3 = 2,540,171.6667
If the quotient is a whole number, then 3 and 2,540,171.6667 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 | 7,620,515 | |
| -1 | -7,620,515 |
Let's try dividing by 4:
7,620,515 ÷ 4 = 1,905,128.75
If the quotient is a whole number, then 4 and 1,905,128.75 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 | 7,620,515 | |
| -1 | 7,620,515 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 239 | 911 | 1,195 | 1,673 | 4,555 | 6,377 | 8,365 | 31,885 | 217,729 | 1,088,645 | 1,524,103 | 7,620,515 |
| -1 | -5 | -7 | -35 | -239 | -911 | -1,195 | -1,673 | -4,555 | -6,377 | -8,365 | -31,885 | -217,729 | -1,088,645 | -1,524,103 | -7,620,515 |
Here are some more numbers to try:
Try the factor calculator