A:
Positive:
1 x 130245055 x 260490113 x 100188565 x 200377151 x 86255755 x 172511327 x 98151963 x 6635
Negative:
-1 x -13024505-5 x -2604901-13 x -1001885-65 x -200377-151 x -86255-755 x -17251-1327 x -9815-1963 x -6635
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 13,024,505, 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 | 13,024,505 | |
| -1 | -13,024,505 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 13,024,505.
Example:
1 x 13,024,505 = 13,024,505
and
-1 x -13,024,505 = 13,024,505
Notice both answers equal 13,024,505
With that explanation out of the way, let's continue. Next, we take the number 13,024,505 and divide it by 2:
13,024,505 ÷ 2 = 6,512,252.5
If the quotient is a whole number, then 2 and 6,512,252.5 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 | 13,024,505 | |
| -1 | -13,024,505 |
Now, we try dividing 13,024,505 by 3:
13,024,505 ÷ 3 = 4,341,501.6667
If the quotient is a whole number, then 3 and 4,341,501.6667 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 | 13,024,505 | |
| -1 | -13,024,505 |
Let's try dividing by 4:
13,024,505 ÷ 4 = 3,256,126.25
If the quotient is a whole number, then 4 and 3,256,126.25 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 | 13,024,505 | |
| -1 | 13,024,505 |
If you did it right, you will end up with this table:
| 1 | 5 | 13 | 65 | 151 | 755 | 1,327 | 1,963 | 6,635 | 9,815 | 17,251 | 86,255 | 200,377 | 1,001,885 | 2,604,901 | 13,024,505 |
| -1 | -5 | -13 | -65 | -151 | -755 | -1,327 | -1,963 | -6,635 | -9,815 | -17,251 | -86,255 | -200,377 | -1,001,885 | -2,604,901 | -13,024,505 |
Here are some more numbers to try:
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