A:
Positive:
1 x 12125015319 x 638158743 x 281977173 x 1660961107 x 1133179361 x 335873817 x 1484091387 x 874192033 x 596413139 x 386274601 x 263537811 x 15523
Negative:
-1 x -121250153-19 x -6381587-43 x -2819771-73 x -1660961-107 x -1133179-361 x -335873-817 x -148409-1387 x -87419-2033 x -59641-3139 x -38627-4601 x -26353-7811 x -15523
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 121,250,153, 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 | 121,250,153 | |
| -1 | -121,250,153 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,250,153.
Example:
1 x 121,250,153 = 121,250,153
and
-1 x -121,250,153 = 121,250,153
Notice both answers equal 121,250,153
With that explanation out of the way, let's continue. Next, we take the number 121,250,153 and divide it by 2:
121,250,153 ÷ 2 = 60,625,076.5
If the quotient is a whole number, then 2 and 60,625,076.5 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 | 121,250,153 | |
| -1 | -121,250,153 |
Now, we try dividing 121,250,153 by 3:
121,250,153 ÷ 3 = 40,416,717.6667
If the quotient is a whole number, then 3 and 40,416,717.6667 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 | 121,250,153 | |
| -1 | -121,250,153 |
Let's try dividing by 4:
121,250,153 ÷ 4 = 30,312,538.25
If the quotient is a whole number, then 4 and 30,312,538.25 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 | 121,250,153 | |
| -1 | 121,250,153 |
If you did it right, you will end up with this table:
| 1 | 19 | 43 | 73 | 107 | 361 | 817 | 1,387 | 2,033 | 3,139 | 4,601 | 7,811 | 15,523 | 26,353 | 38,627 | 59,641 | 87,419 | 148,409 | 335,873 | 1,133,179 | 1,660,961 | 2,819,771 | 6,381,587 | 121,250,153 |
| -1 | -19 | -43 | -73 | -107 | -361 | -817 | -1,387 | -2,033 | -3,139 | -4,601 | -7,811 | -15,523 | -26,353 | -38,627 | -59,641 | -87,419 | -148,409 | -335,873 | -1,133,179 | -1,660,961 | -2,819,771 | -6,381,587 | -121,250,153 |
Here are some more numbers to try:
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