A:
Positive:
1 x 13015405711 x 1183218717 x 7656121187 x 696011457 x 2848011523 x 854595027 x 258917769 x 16753
Negative:
-1 x -130154057-11 x -11832187-17 x -7656121-187 x -696011-457 x -284801-1523 x -85459-5027 x -25891-7769 x -16753
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 130,154,057, 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 | 130,154,057 | |
| -1 | -130,154,057 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 130,154,057.
Example:
1 x 130,154,057 = 130,154,057
and
-1 x -130,154,057 = 130,154,057
Notice both answers equal 130,154,057
With that explanation out of the way, let's continue. Next, we take the number 130,154,057 and divide it by 2:
130,154,057 ÷ 2 = 65,077,028.5
If the quotient is a whole number, then 2 and 65,077,028.5 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 | 130,154,057 | |
| -1 | -130,154,057 |
Now, we try dividing 130,154,057 by 3:
130,154,057 ÷ 3 = 43,384,685.6667
If the quotient is a whole number, then 3 and 43,384,685.6667 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 | 130,154,057 | |
| -1 | -130,154,057 |
Let's try dividing by 4:
130,154,057 ÷ 4 = 32,538,514.25
If the quotient is a whole number, then 4 and 32,538,514.25 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 | 130,154,057 | |
| -1 | 130,154,057 |
If you did it right, you will end up with this table:
| 1 | 11 | 17 | 187 | 457 | 1,523 | 5,027 | 7,769 | 16,753 | 25,891 | 85,459 | 284,801 | 696,011 | 7,656,121 | 11,832,187 | 130,154,057 |
| -1 | -11 | -17 | -187 | -457 | -1,523 | -5,027 | -7,769 | -16,753 | -25,891 | -85,459 | -284,801 | -696,011 | -7,656,121 | -11,832,187 | -130,154,057 |
Here are some more numbers to try:
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