A:
Positive:
1 x 1214530155 x 2429060317 x 714429529 x 418803585 x 1428859145 x 837607493 x 246355841 x 1444151699 x 714852465 x 492714205 x 288838495 x 14297
Negative:
-1 x -121453015-5 x -24290603-17 x -7144295-29 x -4188035-85 x -1428859-145 x -837607-493 x -246355-841 x -144415-1699 x -71485-2465 x -49271-4205 x -28883-8495 x -14297
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 121,453,015, 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 | 121,453,015 | |
| -1 | -121,453,015 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 121,453,015.
Example:
1 x 121,453,015 = 121,453,015
and
-1 x -121,453,015 = 121,453,015
Notice both answers equal 121,453,015
With that explanation out of the way, let's continue. Next, we take the number 121,453,015 and divide it by 2:
121,453,015 ÷ 2 = 60,726,507.5
If the quotient is a whole number, then 2 and 60,726,507.5 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 | 121,453,015 | |
| -1 | -121,453,015 |
Now, we try dividing 121,453,015 by 3:
121,453,015 ÷ 3 = 40,484,338.3333
If the quotient is a whole number, then 3 and 40,484,338.3333 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 | 121,453,015 | |
| -1 | -121,453,015 |
Let's try dividing by 4:
121,453,015 ÷ 4 = 30,363,253.75
If the quotient is a whole number, then 4 and 30,363,253.75 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 | 121,453,015 | |
| -1 | 121,453,015 |
If you did it right, you will end up with this table:
| 1 | 5 | 17 | 29 | 85 | 145 | 493 | 841 | 1,699 | 2,465 | 4,205 | 8,495 | 14,297 | 28,883 | 49,271 | 71,485 | 144,415 | 246,355 | 837,607 | 1,428,859 | 4,188,035 | 7,144,295 | 24,290,603 | 121,453,015 |
| -1 | -5 | -17 | -29 | -85 | -145 | -493 | -841 | -1,699 | -2,465 | -4,205 | -8,495 | -14,297 | -28,883 | -49,271 | -71,485 | -144,415 | -246,355 | -837,607 | -1,428,859 | -4,188,035 | -7,144,295 | -24,290,603 | -121,453,015 |
Here are some more numbers to try:
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