Let pand g n=p8ge, be distinct primes. het show that v (^)n.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Let Pang g be distinct primes. het
Band
n=p8"gel, "show that
Transcribed Image Text:Let Pang g be distinct primes. het Band n=p8"gel, "show that
pa+1_1
Lemma 1. Let p = P.
p-1 ·
be a prime and let a E N. Then v(1) = 1, v(pª) = a + 1, and o(pª)
Theorem 2. Suppose that the positive integer n has the prime factorization into distinct primes
ak
n = Pi P2 Pk
a1
...
Then
(1)
v(n) = (a1 +1)(a2 + 1) ·. · (ak +1),
ak+1
Pk
p4 -1 p2+1
a1+1
pt- 1
(2)
-
o (n) =
Pi – 1
P2 – 1
Pk -1
-
Lemma 3. Let p>1 be a prime number and let a > 1. Then
$(p*) = p* – pª=l = p° (1 - -)
a2
· Pk
ak
a1
Pi P2
Theorem 4. Suppose that the positive integer n has the prime factorization n =
Then
ak
$(n) = pª" ( 1 –-)
Pk
P2
Pi
P2
Pk
= n|1 -
P1
1
P2
1
Pk
...
Transcribed Image Text:pa+1_1 Lemma 1. Let p = P. p-1 · be a prime and let a E N. Then v(1) = 1, v(pª) = a + 1, and o(pª) Theorem 2. Suppose that the positive integer n has the prime factorization into distinct primes ak n = Pi P2 Pk a1 ... Then (1) v(n) = (a1 +1)(a2 + 1) ·. · (ak +1), ak+1 Pk p4 -1 p2+1 a1+1 pt- 1 (2) - o (n) = Pi – 1 P2 – 1 Pk -1 - Lemma 3. Let p>1 be a prime number and let a > 1. Then $(p*) = p* – pª=l = p° (1 - -) a2 · Pk ak a1 Pi P2 Theorem 4. Suppose that the positive integer n has the prime factorization n = Then ak $(n) = pª" ( 1 –-) Pk P2 Pi P2 Pk = n|1 - P1 1 P2 1 Pk ...
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