A:
Positive:
1 x 12265141129 x 422935937 x 3314903151 x 812261757 x 1620231073 x 1143074379 x 280095587 x 21953
Negative:
-1 x -122651411-29 x -4229359-37 x -3314903-151 x -812261-757 x -162023-1073 x -114307-4379 x -28009-5587 x -21953
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 122,651,411, 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 | 122,651,411 | |
| -1 | -122,651,411 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 122,651,411.
Example:
1 x 122,651,411 = 122,651,411
and
-1 x -122,651,411 = 122,651,411
Notice both answers equal 122,651,411
With that explanation out of the way, let's continue. Next, we take the number 122,651,411 and divide it by 2:
122,651,411 ÷ 2 = 61,325,705.5
If the quotient is a whole number, then 2 and 61,325,705.5 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 | 122,651,411 | |
| -1 | -122,651,411 |
Now, we try dividing 122,651,411 by 3:
122,651,411 ÷ 3 = 40,883,803.6667
If the quotient is a whole number, then 3 and 40,883,803.6667 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 | 122,651,411 | |
| -1 | -122,651,411 |
Let's try dividing by 4:
122,651,411 ÷ 4 = 30,662,852.75
If the quotient is a whole number, then 4 and 30,662,852.75 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 | 122,651,411 | |
| -1 | 122,651,411 |
If you did it right, you will end up with this table:
| 1 | 29 | 37 | 151 | 757 | 1,073 | 4,379 | 5,587 | 21,953 | 28,009 | 114,307 | 162,023 | 812,261 | 3,314,903 | 4,229,359 | 122,651,411 |
| -1 | -29 | -37 | -151 | -757 | -1,073 | -4,379 | -5,587 | -21,953 | -28,009 | -114,307 | -162,023 | -812,261 | -3,314,903 | -4,229,359 | -122,651,411 |
Here are some more numbers to try:
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