10
An Integer?
A perfect octave
The sum of the 1st perfect number and 2nd perfect number is. . . 34!
If by 'perfect number' you mean 'perfect SQUARE', then yes. 49 is an odd number and a perfect square.
10
An Integer?
10
He discovered the ratio of a perfect octave is 2:1.
perfect fourth !
A perfect octave
64: 1, 2, 4, 8, 16, 32, 64Tip: To find the number, consider that if there are an odd number of factors, the number must be a perfect square, because a perfect square has one factor that is multiplied by itself. 64: 1, 2, 4, 8, 16, 32, 64Tip: To find the number, consider that if there are an odd number of factors, the number must be a perfect square, because a perfect square has one factor that is multiplied by itself.
Pythagoras
Arthur Pythagoras
No. Consider 15: 1,3,5,15 Every positive whole number has an even number of factors, unless the number is a perfect square.
Pythagoras studied odd and even numbers, triangular numbers, and perfect numbers. Pythagoreans contributed to our understanding of angles, triangles, areas, proportion, polygons, and polyhedra
Mostly geometry and number theory.