A:
Positive:
1 x 72380155 x 144760383 x 87205107 x 67645163 x 44405415 x 17441535 x 13529815 x 8881
Negative:
-1 x -7238015-5 x -1447603-83 x -87205-107 x -67645-163 x -44405-415 x -17441-535 x -13529-815 x -8881
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 7,238,015, 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 | 7,238,015 | |
| -1 | -7,238,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 7,238,015.
Example:
1 x 7,238,015 = 7,238,015
and
-1 x -7,238,015 = 7,238,015
Notice both answers equal 7,238,015
With that explanation out of the way, let's continue. Next, we take the number 7,238,015 and divide it by 2:
7,238,015 ÷ 2 = 3,619,007.5
If the quotient is a whole number, then 2 and 3,619,007.5 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 | 7,238,015 | |
| -1 | -7,238,015 |
Now, we try dividing 7,238,015 by 3:
7,238,015 ÷ 3 = 2,412,671.6667
If the quotient is a whole number, then 3 and 2,412,671.6667 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 | 7,238,015 | |
| -1 | -7,238,015 |
Let's try dividing by 4:
7,238,015 ÷ 4 = 1,809,503.75
If the quotient is a whole number, then 4 and 1,809,503.75 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 | 7,238,015 | |
| -1 | 7,238,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 83 | 107 | 163 | 415 | 535 | 815 | 8,881 | 13,529 | 17,441 | 44,405 | 67,645 | 87,205 | 1,447,603 | 7,238,015 |
| -1 | -5 | -83 | -107 | -163 | -415 | -535 | -815 | -8,881 | -13,529 | -17,441 | -44,405 | -67,645 | -87,205 | -1,447,603 | -7,238,015 |
Here are some more numbers to try:
Try the factor calculator