A:
Positive:
1 x 153075237 x 218678911 x 139159361 x 25094377 x 198799427 x 35849671 x 228133259 x 4697
Negative:
-1 x -15307523-7 x -2186789-11 x -1391593-61 x -250943-77 x -198799-427 x -35849-671 x -22813-3259 x -4697
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 15,307,523, 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 | 15,307,523 | |
| -1 | -15,307,523 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,307,523.
Example:
1 x 15,307,523 = 15,307,523
and
-1 x -15,307,523 = 15,307,523
Notice both answers equal 15,307,523
With that explanation out of the way, let's continue. Next, we take the number 15,307,523 and divide it by 2:
15,307,523 ÷ 2 = 7,653,761.5
If the quotient is a whole number, then 2 and 7,653,761.5 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 | 15,307,523 | |
| -1 | -15,307,523 |
Now, we try dividing 15,307,523 by 3:
15,307,523 ÷ 3 = 5,102,507.6667
If the quotient is a whole number, then 3 and 5,102,507.6667 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 | 15,307,523 | |
| -1 | -15,307,523 |
Let's try dividing by 4:
15,307,523 ÷ 4 = 3,826,880.75
If the quotient is a whole number, then 4 and 3,826,880.75 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 | 15,307,523 | |
| -1 | 15,307,523 |
If you did it right, you will end up with this table:
| 1 | 7 | 11 | 61 | 77 | 427 | 671 | 3,259 | 4,697 | 22,813 | 35,849 | 198,799 | 250,943 | 1,391,593 | 2,186,789 | 15,307,523 |
| -1 | -7 | -11 | -61 | -77 | -427 | -671 | -3,259 | -4,697 | -22,813 | -35,849 | -198,799 | -250,943 | -1,391,593 | -2,186,789 | -15,307,523 |
Here are some more numbers to try:
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