A:
Positive:
1 x 15161625117 x 8918603101 x 1501151227 x 667913389 x 3897591717 x 883033859 x 392896613 x 22927
Negative:
-1 x -151616251-17 x -8918603-101 x -1501151-227 x -667913-389 x -389759-1717 x -88303-3859 x -39289-6613 x -22927
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 151,616,251, 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 | 151,616,251 | |
| -1 | -151,616,251 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,616,251.
Example:
1 x 151,616,251 = 151,616,251
and
-1 x -151,616,251 = 151,616,251
Notice both answers equal 151,616,251
With that explanation out of the way, let's continue. Next, we take the number 151,616,251 and divide it by 2:
151,616,251 ÷ 2 = 75,808,125.5
If the quotient is a whole number, then 2 and 75,808,125.5 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 | 151,616,251 | |
| -1 | -151,616,251 |
Now, we try dividing 151,616,251 by 3:
151,616,251 ÷ 3 = 50,538,750.3333
If the quotient is a whole number, then 3 and 50,538,750.3333 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 | 151,616,251 | |
| -1 | -151,616,251 |
Let's try dividing by 4:
151,616,251 ÷ 4 = 37,904,062.75
If the quotient is a whole number, then 4 and 37,904,062.75 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 | 151,616,251 | |
| -1 | 151,616,251 |
If you did it right, you will end up with this table:
| 1 | 17 | 101 | 227 | 389 | 1,717 | 3,859 | 6,613 | 22,927 | 39,289 | 88,303 | 389,759 | 667,913 | 1,501,151 | 8,918,603 | 151,616,251 |
| -1 | -17 | -101 | -227 | -389 | -1,717 | -3,859 | -6,613 | -22,927 | -39,289 | -88,303 | -389,759 | -667,913 | -1,501,151 | -8,918,603 | -151,616,251 |
Here are some more numbers to try:
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