[ 1] HALBEISEN L,HUNGERBHLER N. On Generalized Carmichael Numbers[ J] . Hardy- Ramanujan J. , 1999, 22: 8- 22.[ 2] BIRKHOFF G D, VANDIVER H S. On the Integral Divisors of an- bn[ J] . Ann. of Math. , 1904, 5( 2) : 173- 180.[ 3] 华罗庚.数论导引[M]. 北京: 科学出版社, 1979.
