A:
Positive:
1 x 151666455 x 303332913 x 116666565 x 233333353 x 42965661 x 229451765 x 85933305 x 4589
Negative:
-1 x -15166645-5 x -3033329-13 x -1166665-65 x -233333-353 x -42965-661 x -22945-1765 x -8593-3305 x -4589
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 15,166,645, 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 | 15,166,645 | |
| -1 | -15,166,645 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,166,645.
Example:
1 x 15,166,645 = 15,166,645
and
-1 x -15,166,645 = 15,166,645
Notice both answers equal 15,166,645
With that explanation out of the way, let's continue. Next, we take the number 15,166,645 and divide it by 2:
15,166,645 ÷ 2 = 7,583,322.5
If the quotient is a whole number, then 2 and 7,583,322.5 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 | 15,166,645 | |
| -1 | -15,166,645 |
Now, we try dividing 15,166,645 by 3:
15,166,645 ÷ 3 = 5,055,548.3333
If the quotient is a whole number, then 3 and 5,055,548.3333 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 | 15,166,645 | |
| -1 | -15,166,645 |
Let's try dividing by 4:
15,166,645 ÷ 4 = 3,791,661.25
If the quotient is a whole number, then 4 and 3,791,661.25 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 | 15,166,645 | |
| -1 | 15,166,645 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 353 | 661 | 1,765 | 3,305 | 4,589 | 8,593 | 22,945 | 42,965 | 233,333 | 1,166,665 | 3,033,329 | 15,166,645 |
| -1 | -5 | -13 | -65 | -353 | -661 | -1,765 | -3,305 | -4,589 | -8,593 | -22,945 | -42,965 | -233,333 | -1,166,665 | -3,033,329 | -15,166,645 |
Here are some more numbers to try:
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