Chapter 24
Perfect numbers
1 Perfect numbers
2 Charles Twigg on the first 10 perfect numbers
3 Abundant and deficient numbers
Appendix: Mersenne primes
Appendix: Three important number theoretic functions
Exercise
1 Perfect numbers
2 Charles Twigg on the first 10 perfect numbers
3 Abundant and deficient numbers
Appendix: Mersenne primes
Appendix: Three important number theoretic functions
Exercise