A:
Positive:
1 x 153023655 x 306047313 x 117710565 x 235421397 x 38545593 x 258051985 x 77092965 x 5161
Negative:
-1 x -15302365-5 x -3060473-13 x -1177105-65 x -235421-397 x -38545-593 x -25805-1985 x -7709-2965 x -5161
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 15,302,365, 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 | 15,302,365 | |
| -1 | -15,302,365 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 15,302,365.
Example:
1 x 15,302,365 = 15,302,365
and
-1 x -15,302,365 = 15,302,365
Notice both answers equal 15,302,365
With that explanation out of the way, let's continue. Next, we take the number 15,302,365 and divide it by 2:
15,302,365 ÷ 2 = 7,651,182.5
If the quotient is a whole number, then 2 and 7,651,182.5 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 | 15,302,365 | |
| -1 | -15,302,365 |
Now, we try dividing 15,302,365 by 3:
15,302,365 ÷ 3 = 5,100,788.3333
If the quotient is a whole number, then 3 and 5,100,788.3333 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 | 15,302,365 | |
| -1 | -15,302,365 |
Let's try dividing by 4:
15,302,365 ÷ 4 = 3,825,591.25
If the quotient is a whole number, then 4 and 3,825,591.25 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 | 15,302,365 | |
| -1 | 15,302,365 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 397 | 593 | 1,985 | 2,965 | 5,161 | 7,709 | 25,805 | 38,545 | 235,421 | 1,177,105 | 3,060,473 | 15,302,365 |
| -1 | -5 | -13 | -65 | -397 | -593 | -1,985 | -2,965 | -5,161 | -7,709 | -25,805 | -38,545 | -235,421 | -1,177,105 | -3,060,473 | -15,302,365 |
Here are some more numbers to try:
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