A:
Positive:
1 x 71384155 x 142768383 x 86005103 x 69305167 x 42745415 x 17201515 x 13861835 x 8549
Negative:
-1 x -7138415-5 x -1427683-83 x -86005-103 x -69305-167 x -42745-415 x -17201-515 x -13861-835 x -8549
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 7,138,415, 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 | 7,138,415 | |
| -1 | -7,138,415 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,138,415.
Example:
1 x 7,138,415 = 7,138,415
and
-1 x -7,138,415 = 7,138,415
Notice both answers equal 7,138,415
With that explanation out of the way, let's continue. Next, we take the number 7,138,415 and divide it by 2:
7,138,415 ÷ 2 = 3,569,207.5
If the quotient is a whole number, then 2 and 3,569,207.5 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 | 7,138,415 | |
| -1 | -7,138,415 |
Now, we try dividing 7,138,415 by 3:
7,138,415 ÷ 3 = 2,379,471.6667
If the quotient is a whole number, then 3 and 2,379,471.6667 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 | 7,138,415 | |
| -1 | -7,138,415 |
Let's try dividing by 4:
7,138,415 ÷ 4 = 1,784,603.75
If the quotient is a whole number, then 4 and 1,784,603.75 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 | 7,138,415 | |
| -1 | 7,138,415 |
If you did it right, you will end up with this table:
| 1 | 5 | 83 | 103 | 167 | 415 | 515 | 835 | 8,549 | 13,861 | 17,201 | 42,745 | 69,305 | 86,005 | 1,427,683 | 7,138,415 |
| -1 | -5 | -83 | -103 | -167 | -415 | -515 | -835 | -8,549 | -13,861 | -17,201 | -42,745 | -69,305 | -86,005 | -1,427,683 | -7,138,415 |
Here are some more numbers to try:
Try the factor calculator