What is a factor of 40?

40 is divisible by a number of factors. Some of the factors of 40 are:

1. 1 and 40: 1 times 40 is 40.
2. 2 and 20: 2 times 20 is 40.
3. 4 and 10: 4 times 10 is 40.
4. 5 and 8: 5 times 8 is 40.

The sum of all the factors of 40 is 78. The largest factor of 40 is 40 itself, and the smallest factor is 1.

40 is an even number, which means it is divisible by 2. It is also a composite number, which means it has more than two factors.

In terms of prime factorization, 40 can be written as 2 raised to the power of 3 multiplied by 5: 2^3 × 5.