A:
Positive:
1 x 150203955 x 300407913 x 115541565 x 23108367 x 224185335 x 44837871 x 172453449 x 4355
Negative:
-1 x -15020395-5 x -3004079-13 x -1155415-65 x -231083-67 x -224185-335 x -44837-871 x -17245-3449 x -4355
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 15,020,395, 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 | 15,020,395 | |
| -1 | -15,020,395 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,020,395.
Example:
1 x 15,020,395 = 15,020,395
and
-1 x -15,020,395 = 15,020,395
Notice both answers equal 15,020,395
With that explanation out of the way, let's continue. Next, we take the number 15,020,395 and divide it by 2:
15,020,395 ÷ 2 = 7,510,197.5
If the quotient is a whole number, then 2 and 7,510,197.5 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 | 15,020,395 | |
| -1 | -15,020,395 |
Now, we try dividing 15,020,395 by 3:
15,020,395 ÷ 3 = 5,006,798.3333
If the quotient is a whole number, then 3 and 5,006,798.3333 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 | 15,020,395 | |
| -1 | -15,020,395 |
Let's try dividing by 4:
15,020,395 ÷ 4 = 3,755,098.75
If the quotient is a whole number, then 4 and 3,755,098.75 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 | 15,020,395 | |
| -1 | 15,020,395 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 67 | 335 | 871 | 3,449 | 4,355 | 17,245 | 44,837 | 224,185 | 231,083 | 1,155,415 | 3,004,079 | 15,020,395 |
| -1 | -5 | -13 | -65 | -67 | -335 | -871 | -3,449 | -4,355 | -17,245 | -44,837 | -224,185 | -231,083 | -1,155,415 | -3,004,079 | -15,020,395 |
Here are some more numbers to try:
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