A:
Positive:
1 x 154586817 x 220838341 x 37704161 x 253421287 x 53863427 x 36203883 x 175072501 x 6181
Negative:
-1 x -15458681-7 x -2208383-41 x -377041-61 x -253421-287 x -53863-427 x -36203-883 x -17507-2501 x -6181
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 15,458,681, 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 | 15,458,681 | |
| -1 | -15,458,681 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,458,681.
Example:
1 x 15,458,681 = 15,458,681
and
-1 x -15,458,681 = 15,458,681
Notice both answers equal 15,458,681
With that explanation out of the way, let's continue. Next, we take the number 15,458,681 and divide it by 2:
15,458,681 ÷ 2 = 7,729,340.5
If the quotient is a whole number, then 2 and 7,729,340.5 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 | 15,458,681 | |
| -1 | -15,458,681 |
Now, we try dividing 15,458,681 by 3:
15,458,681 ÷ 3 = 5,152,893.6667
If the quotient is a whole number, then 3 and 5,152,893.6667 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 | 15,458,681 | |
| -1 | -15,458,681 |
Let's try dividing by 4:
15,458,681 ÷ 4 = 3,864,670.25
If the quotient is a whole number, then 4 and 3,864,670.25 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 | 15,458,681 | |
| -1 | 15,458,681 |
If you did it right, you will end up with this table:
| 1 | 7 | 41 | 61 | 287 | 427 | 883 | 2,501 | 6,181 | 17,507 | 36,203 | 53,863 | 253,421 | 377,041 | 2,208,383 | 15,458,681 |
| -1 | -7 | -41 | -61 | -287 | -427 | -883 | -2,501 | -6,181 | -17,507 | -36,203 | -53,863 | -253,421 | -377,041 | -2,208,383 | -15,458,681 |
Here are some more numbers to try:
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