A327172 - cp's OEIS frontend

A327172 If there is a divisor d of n such that phi(d)*d = n, then a(n) = d, otherwise a(n) = 0.

n	a(n)
1	1
2	2
3	0
4	0
5	0
6	3
7	0
8	4
9	0
10	0
11	0
12	6
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	5
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	8
33	0
34	0
35	0
36	0
37	0
38	0
39	0
40	10
41	0
42	7
43	0
44	0
45	0
46	0
47	0
48	12
49	0
50	0
51	0
52	0
53	0
54	9
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	14
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	0
107	0
108	18
109	0
110	11
111	0
112	0
113	0
114	0
115	0
116	0
117	0
118	0
119	0
120	15

[1, 2, 0, 0, 0, 3, 0, 4, 0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 10, 0, 7, 0, 0, 0, 0, 0, 12, 0, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 14, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 18, 0, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 15]

cp's OEIS Frontend

A327172 If there is a divisor d of n such that phi(d)*d = n, then a(n) = d, otherwise a(n) = 0.

Table of values

List of values

n	a(n)
1	1
2	2
3	0
4	0
5	0
6	3
7	0
8	4
9	0
10	0
11	0
12	6
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	5
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	8
33	0
34	0
35	0
36	0
37	0
38	0
39	0
40	10
41	0
42	7
43	0
44	0
45	0
46	0
47	0
48	12
49	0
50	0
51	0
52	0
53	0
54	9
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	14
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	0
107	0
108	18
109	0
110	11
111	0
112	0
113	0
114	0
115	0
116	0
117	0
118	0
119	0
120	15

n	a(n)
1	1
2	2
3	0
4	0
5	0
6	3
7	0
8	4
9	0
10	0
11	0
12	6
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	5
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	8
33	0
34	0
35	0
36	0
37	0
38	0
39	0
40	10
41	0
42	7
43	0
44	0
45	0
46	0
47	0
48	12
49	0
50	0
51	0
52	0
53	0
54	9
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	14
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	0
107	0
108	18
109	0
110	11
111	0
112	0
113	0
114	0
115	0
116	0
117	0
118	0
119	0
120	15

n	a(n)
1	1
2	2
3	0
4	0
5	0
6	3
7	0
8	4
9	0
10	0
11	0
12	6
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	5
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	0
32	8
33	0
34	0
35	0
36	0
37	0
38	0
39	0
40	10
41	0
42	7
43	0
44	0
45	0
46	0
47	0
48	12
49	0
50	0
51	0
52	0
53	0
54	9
55	0
56	0
57	0
58	0
59	0
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	0
68	0
69	0
70	0
71	0
72	0
73	0
74	0
75	0
76	0
77	0
78	0
79	0
80	0
81	0
82	0
83	0
84	14
85	0
86	0
87	0
88	0
89	0
90	0
91	0
92	0
93	0
94	0
95	0
96	0
97	0
98	0
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	0
107	0
108	18
109	0
110	11
111	0
112	0
113	0
114	0
115	0
116	0
117	0
118	0
119	0
120	15