Abstract:
We study the fundamental theorem of arithmetic and unique factorization, and we defined the prime power factorization, we give also some the theorem and example t the multiplicate functions. Also we defined the perfect numbers and mersenne and Fermat number. Also we study the mobius inversion formula and the sum of the divisor.
Finally we solving linear congruence, and study the Chinese reminder theorem and the theorems of Fermat and Euler.
