Amazing number

An amazing number is name for such even number, the decomposition product of prime numbers has exactly three not necessarily different factors and the sum of all its divisors is equal to twice that number. Find all amazing numbers.

Result

n =  28

Solution: Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...): Be the first to comment! Next similar math problems:

1. Sum of two primes Christian Goldbach, a mathematician, found out that every even number greater than 2 can be expressed as a sum of two prime numbers. Write or express 2018 as a sum of two prime numbers.
2. Unknown number Unknown number is divisible by exactly three different primes. When we compare these primes in ascending order, the following applies: • Difference first and second prime number is half the difference between the third and second prime numbers. • The produ
3. Combinations How many different combinations of two-digit number divisible by 4 arises from the digits 3, 5 and 7?
4. Numbers Write smallest three-digit number, which in division 5 and 7 gives the rest 2.
5. Chebyshev formula To estimate the number of primes less than x is used Chebyshev formula: ? Estimate the number of primes less than 30300537.
6. Divisors The sum of all divisors unknown odd number is 2112. Determine sum of all divisors of number which is twice of unknown numbers.
7. Theorem prove We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
8. Teams How many ways can divide 16 players into two teams of 8 member?
9. Blocks There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there?
10. Chords How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones?
11. Confectionery The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets.
12. Average If the average(arithmetic mean) of three numbers x,y,z is 50. What is the average of there numbers (3x +10), (3y +10), (3z+10) ?
13. Reference angle Find the reference angle of each angle:
14. AP - simple Determine the first nine elements of sequence if a10 = -1 and d = 4
15. Today in school There are 9 girls and 11 boys in the class today. What is the probability that Suzan will go to the board today?
16. Line It is true that the lines that do not intersect are parallel?
17. Sequence Write the first 6 members of these sequence: a1 = 5 a2 = 7 an+2 = an+1 +2 an