A241479 - cp's OEIS frontend

A241479 GCD of the solutions x of sigma(x) = sigma(n), where sigma(n) = A000203(n) = sum of divisors of n.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	1
7	7
8	8
9	9
10	1
11	1
12	12
13	13
14	1
15	1
16	1
17	1
18	18
19	19
20	1
21	1
22	22
23	1
24	1
25	1
26	1
27	27
28	1
29	29
30	1
31	1
32	32
33	1
34	1
35	1
36	36
37	37
38	1
39	1
40	1
41	1
42	1
43	43
44	1
45	45
46	1
47	1
48	3
49	49
50	50
51	1
52	1
53	1
54	1
55	1
56	1
57	1
58	1
59	1
60	1
61	61
62	1
63	1
64	64
65	1
66	1
67	67
68	2
69	1
70	1
71	1
72	72
73	73
74	1
75	3
76	1
77	1
78	1
79	1
80	2

[1, 2, 3, 4, 5, 1, 7, 8, 9, 1, 1, 12, 13, 1, 1, 1, 1, 18, 19, 1, 1, 22, 1, 1, 1, 1, 27, 1, 29, 1, 1, 32, 1, 1, 1, 36, 37, 1, 1, 1, 1, 1, 43, 1, 45, 1, 1, 3, 49, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 61, 1, 1, 64, 1, 1, 67, 2, 1, 1, 1, 72, 73, 1, 3, 1, 1, 1, 1, 2]

cp's OEIS Frontend

A241479 GCD of the solutions x of sigma(x) = sigma(n), where sigma(n) = A000203(n) = sum of divisors of n.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	1
7	7
8	8
9	9
10	1
11	1
12	12
13	13
14	1
15	1
16	1
17	1
18	18
19	19
20	1
21	1
22	22
23	1
24	1
25	1
26	1
27	27
28	1
29	29
30	1
31	1
32	32
33	1
34	1
35	1
36	36
37	37
38	1
39	1
40	1
41	1
42	1
43	43
44	1
45	45
46	1
47	1
48	3
49	49
50	50
51	1
52	1
53	1
54	1
55	1
56	1
57	1
58	1
59	1
60	1
61	61
62	1
63	1
64	64
65	1
66	1
67	67
68	2
69	1
70	1
71	1
72	72
73	73
74	1
75	3
76	1
77	1
78	1
79	1
80	2

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	1
7	7
8	8
9	9
10	1
11	1
12	12
13	13
14	1
15	1
16	1
17	1
18	18
19	19
20	1
21	1
22	22
23	1
24	1
25	1
26	1
27	27
28	1
29	29
30	1
31	1
32	32
33	1
34	1
35	1
36	36
37	37
38	1
39	1
40	1
41	1
42	1
43	43
44	1
45	45
46	1
47	1
48	3
49	49
50	50
51	1
52	1
53	1
54	1
55	1
56	1
57	1
58	1
59	1
60	1
61	61
62	1
63	1
64	64
65	1
66	1
67	67
68	2
69	1
70	1
71	1
72	72
73	73
74	1
75	3
76	1
77	1
78	1
79	1
80	2

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	1
7	7
8	8
9	9
10	1
11	1
12	12
13	13
14	1
15	1
16	1
17	1
18	18
19	19
20	1
21	1
22	22
23	1
24	1
25	1
26	1
27	27
28	1
29	29
30	1
31	1
32	32
33	1
34	1
35	1
36	36
37	37
38	1
39	1
40	1
41	1
42	1
43	43
44	1
45	45
46	1
47	1
48	3
49	49
50	50
51	1
52	1
53	1
54	1
55	1
56	1
57	1
58	1
59	1
60	1
61	61
62	1
63	1
64	64
65	1
66	1
67	67
68	2
69	1
70	1
71	1
72	72
73	73
74	1
75	3
76	1
77	1
78	1
79	1
80	2