A176801 - cp's OEIS frontend

A176801 a(n) is the smallest natural number m such that product of arithmetic mean of the divisors of n and arithmetic mean of the divisors of m is an integer.

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

[1, 3, 1, 5, 1, 1, 1, 7, 5, 3, 1, 2, 1, 1, 1, 19, 1, 3, 1, 1, 1, 1, 1, 3, 5, 3, 1, 2, 1, 1, 1, 3, 1, 3, 1, 17, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 19, 1, 3, 1, 5, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 2, 13, 1, 1, 1, 1, 1, 1, 1, 7, 1, 3, 2, 2, 1, 1, 1, 19, 19, 3, 1, 2, 1, 1, 1, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 3, 1, 17, 1, 1, 1, 7, 1]

cp's OEIS Frontend

A176801 a(n) is the smallest natural number m such that product of arithmetic mean of the divisors of n and arithmetic mean of the divisors of m is an integer.

Table of values

List of values

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

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

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