A positive integer *m* is said to be *practical* if every *n* with 1 *n* *m* is a sum of distinct divisors of *m.*

Some article about practical numbers can be found on line in my papers. P. Erdos, W. Sierpinski, G. Tenenbaum, E. Saias B.M. Stewart, H.N. Shapiro, M. Margenstern, M. Hausman, and others dealt with practical numbers in their papers.

Table of practical numbers

Table of twin practical numbers

Table of triplets of practical numbers

Table of 5-uples of practical numbers