A:
Positive:
1 x 2515441337 x 67984967 x 37543973 x 344581139 x 1809672479 x 101472701 x 93134891 x 5143
Negative:
-1 x -25154413-37 x -679849-67 x -375439-73 x -344581-139 x -180967-2479 x -10147-2701 x -9313-4891 x -5143
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 25,154,413, 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 | 25,154,413 | |
| -1 | -25,154,413 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 25,154,413.
Example:
1 x 25,154,413 = 25,154,413
and
-1 x -25,154,413 = 25,154,413
Notice both answers equal 25,154,413
With that explanation out of the way, let's continue. Next, we take the number 25,154,413 and divide it by 2:
25,154,413 ÷ 2 = 12,577,206.5
If the quotient is a whole number, then 2 and 12,577,206.5 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 | 25,154,413 | |
| -1 | -25,154,413 |
Now, we try dividing 25,154,413 by 3:
25,154,413 ÷ 3 = 8,384,804.3333
If the quotient is a whole number, then 3 and 8,384,804.3333 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 | 25,154,413 | |
| -1 | -25,154,413 |
Let's try dividing by 4:
25,154,413 ÷ 4 = 6,288,603.25
If the quotient is a whole number, then 4 and 6,288,603.25 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 | 25,154,413 | |
| -1 | 25,154,413 |
If you did it right, you will end up with this table:
| 1 | 37 | 67 | 73 | 139 | 2,479 | 2,701 | 4,891 | 5,143 | 9,313 | 10,147 | 180,967 | 344,581 | 375,439 | 679,849 | 25,154,413 |
| -1 | -37 | -67 | -73 | -139 | -2,479 | -2,701 | -4,891 | -5,143 | -9,313 | -10,147 | -180,967 | -344,581 | -375,439 | -679,849 | -25,154,413 |
Here are some more numbers to try:
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