A:
Positive:
1 x 1531224177 x 2187463117 x 9007201119 x 1286743313 x 4892092191 x 698874111 x 372475321 x 28777
Negative:
-1 x -153122417-7 x -21874631-17 x -9007201-119 x -1286743-313 x -489209-2191 x -69887-4111 x -37247-5321 x -28777
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 153,122,417, 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 | 153,122,417 | |
| -1 | -153,122,417 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 153,122,417.
Example:
1 x 153,122,417 = 153,122,417
and
-1 x -153,122,417 = 153,122,417
Notice both answers equal 153,122,417
With that explanation out of the way, let's continue. Next, we take the number 153,122,417 and divide it by 2:
153,122,417 ÷ 2 = 76,561,208.5
If the quotient is a whole number, then 2 and 76,561,208.5 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 | 153,122,417 | |
| -1 | -153,122,417 |
Now, we try dividing 153,122,417 by 3:
153,122,417 ÷ 3 = 51,040,805.6667
If the quotient is a whole number, then 3 and 51,040,805.6667 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 | 153,122,417 | |
| -1 | -153,122,417 |
Let's try dividing by 4:
153,122,417 ÷ 4 = 38,280,604.25
If the quotient is a whole number, then 4 and 38,280,604.25 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 | 153,122,417 | |
| -1 | 153,122,417 |
If you did it right, you will end up with this table:
| 1 | 7 | 17 | 119 | 313 | 2,191 | 4,111 | 5,321 | 28,777 | 37,247 | 69,887 | 489,209 | 1,286,743 | 9,007,201 | 21,874,631 | 153,122,417 |
| -1 | -7 | -17 | -119 | -313 | -2,191 | -4,111 | -5,321 | -28,777 | -37,247 | -69,887 | -489,209 | -1,286,743 | -9,007,201 | -21,874,631 | -153,122,417 |
Here are some more numbers to try:
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