A:
Positive:
1 x 75638155 x 15127637 x 108054535 x 216109197 x 38395985 x 76791097 x 68951379 x 5485
Negative:
-1 x -7563815-5 x -1512763-7 x -1080545-35 x -216109-197 x -38395-985 x -7679-1097 x -6895-1379 x -5485
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 7,563,815, 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 | 7,563,815 | |
| -1 | -7,563,815 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,563,815.
Example:
1 x 7,563,815 = 7,563,815
and
-1 x -7,563,815 = 7,563,815
Notice both answers equal 7,563,815
With that explanation out of the way, let's continue. Next, we take the number 7,563,815 and divide it by 2:
7,563,815 ÷ 2 = 3,781,907.5
If the quotient is a whole number, then 2 and 3,781,907.5 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 | 7,563,815 | |
| -1 | -7,563,815 |
Now, we try dividing 7,563,815 by 3:
7,563,815 ÷ 3 = 2,521,271.6667
If the quotient is a whole number, then 3 and 2,521,271.6667 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 | 7,563,815 | |
| -1 | -7,563,815 |
Let's try dividing by 4:
7,563,815 ÷ 4 = 1,890,953.75
If the quotient is a whole number, then 4 and 1,890,953.75 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 | 7,563,815 | |
| -1 | 7,563,815 |
If you did it right, you will end up with this table:
| 1 | 5 | 7 | 35 | 197 | 985 | 1,097 | 1,379 | 5,485 | 6,895 | 7,679 | 38,395 | 216,109 | 1,080,545 | 1,512,763 | 7,563,815 |
| -1 | -5 | -7 | -35 | -197 | -985 | -1,097 | -1,379 | -5,485 | -6,895 | -7,679 | -38,395 | -216,109 | -1,080,545 | -1,512,763 | -7,563,815 |
Here are some more numbers to try:
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