A:
Positive:
1 x 1212077237 x 1731538913 x 932367123 x 526990149 x 247362791 x 1331953161 x 752843299 x 405377637 x 1902791127 x 1075492093 x 579118273 x 14651
Negative:
-1 x -121207723-7 x -17315389-13 x -9323671-23 x -5269901-49 x -2473627-91 x -1331953-161 x -752843-299 x -405377-637 x -190279-1127 x -107549-2093 x -57911-8273 x -14651
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 121,207,723, 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 | 121,207,723 | |
| -1 | -121,207,723 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,207,723.
Example:
1 x 121,207,723 = 121,207,723
and
-1 x -121,207,723 = 121,207,723
Notice both answers equal 121,207,723
With that explanation out of the way, let's continue. Next, we take the number 121,207,723 and divide it by 2:
121,207,723 ÷ 2 = 60,603,861.5
If the quotient is a whole number, then 2 and 60,603,861.5 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 | 121,207,723 | |
| -1 | -121,207,723 |
Now, we try dividing 121,207,723 by 3:
121,207,723 ÷ 3 = 40,402,574.3333
If the quotient is a whole number, then 3 and 40,402,574.3333 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 | 121,207,723 | |
| -1 | -121,207,723 |
Let's try dividing by 4:
121,207,723 ÷ 4 = 30,301,930.75
If the quotient is a whole number, then 4 and 30,301,930.75 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 | 121,207,723 | |
| -1 | 121,207,723 |
If you did it right, you will end up with this table:
| 1 | 7 | 13 | 23 | 49 | 91 | 161 | 299 | 637 | 1,127 | 2,093 | 8,273 | 14,651 | 57,911 | 107,549 | 190,279 | 405,377 | 752,843 | 1,331,953 | 2,473,627 | 5,269,901 | 9,323,671 | 17,315,389 | 121,207,723 |
| -1 | -7 | -13 | -23 | -49 | -91 | -161 | -299 | -637 | -1,127 | -2,093 | -8,273 | -14,651 | -57,911 | -107,549 | -190,279 | -405,377 | -752,843 | -1,331,953 | -2,473,627 | -5,269,901 | -9,323,671 | -17,315,389 | -121,207,723 |
Here are some more numbers to try:
Try the factor calculator