MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Factors

Two perfect n...

Question

Two perfect numbers are ......... and ...........

Open in App

Solution

A perfect number is a positive number that equals the sum of its divisors, excluding itself.
Divisors of 6 = 1, 2, 3
Divisors of 28 = 1, 2, 4, 7, 14, 28
In 6, the sum of divisors except itself, 1 + 2 + 3 is 6.
In 28, the sum of divisors except itself, 1 + 2 + 4 + 7 + 14 is 28.
Therefore, two perfect numbers are 6 and 28.

Suggest Corrections

thumbs-up

5

Similar questions

Q. Define a perfect number. Write two perfect numbers

Q. A four digit perfect square number whose first two digits and last two digits taken seperately are also perfect squares is:

Q. If a four-digit perfect square number is such that the number formed by the first two digits and the number formed by the last two digits are also perfect squares, identify the four digit number.

Q. Consider four-digit numbers for which the first two digits are equal and the last two digits are also equal. How many such numbers are perfect squares?

Q. Consider four digit numbers for which the first two digits are equal and the last two digits are also equal. How many such numbers are perfect squares? (CAT 2007)

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Factors

MATHEMATICS

Watch in App

explore_more_icon

Explore more

Standard VI Mathematics

Join BYJU'S Learning Program

CrossIcon