A:
Positive:
1 x 152223555 x 304447137 x 411415107 x 142265185 x 82283535 x 28453769 x 197953845 x 3959
Negative:
-1 x -15222355-5 x -3044471-37 x -411415-107 x -142265-185 x -82283-535 x -28453-769 x -19795-3845 x -3959
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 15,222,355, 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 | 15,222,355 | |
| -1 | -15,222,355 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,222,355.
Example:
1 x 15,222,355 = 15,222,355
and
-1 x -15,222,355 = 15,222,355
Notice both answers equal 15,222,355
With that explanation out of the way, let's continue. Next, we take the number 15,222,355 and divide it by 2:
15,222,355 ÷ 2 = 7,611,177.5
If the quotient is a whole number, then 2 and 7,611,177.5 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 | 15,222,355 | |
| -1 | -15,222,355 |
Now, we try dividing 15,222,355 by 3:
15,222,355 ÷ 3 = 5,074,118.3333
If the quotient is a whole number, then 3 and 5,074,118.3333 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 | 15,222,355 | |
| -1 | -15,222,355 |
Let's try dividing by 4:
15,222,355 ÷ 4 = 3,805,588.75
If the quotient is a whole number, then 4 and 3,805,588.75 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 | 15,222,355 | |
| -1 | 15,222,355 |
If you did it right, you will end up with this table:
| 1 | 5 | 37 | 107 | 185 | 535 | 769 | 3,845 | 3,959 | 19,795 | 28,453 | 82,283 | 142,265 | 411,415 | 3,044,471 | 15,222,355 |
| -1 | -5 | -37 | -107 | -185 | -535 | -769 | -3,845 | -3,959 | -19,795 | -28,453 | -82,283 | -142,265 | -411,415 | -3,044,471 | -15,222,355 |
Here are some more numbers to try:
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