A231817 - cp's OEIS frontend

A231817 Multiplicative digital root of concatenation of all divisors of n (A037278).

n	a(n)
1	1
2	2
3	3
4	8
5	5
6	8
7	7
8	8
9	4
10	0
11	1
12	6
13	3
14	0
15	5
16	0
17	7
18	0
19	9
20	0
21	8
22	8
23	6
24	8
25	0
26	4
27	6
28	0
29	8
30	0
31	3
32	0
33	4
34	6
35	0
36	0
37	2
38	8
39	8
40	0
41	4
42	0
43	2
44	0
45	0
46	6
47	6
48	0
49	0
50	0
51	0
52	0
53	5
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	6
62	4
63	0
64	0
65	0
66	0
67	8
68	0
69	2
70	0
71	7
72	0
73	2
74	8
75	0
76	0
77	8
78	0
79	8
80	0
81	0
82	6
83	8
84	0
85	0
86	0
87	0

[1, 2, 3, 8, 5, 8, 7, 8, 4, 0, 1, 6, 3, 0, 5, 0, 7, 0, 9, 0, 8, 8, 6, 8, 0, 4, 6, 0, 8, 0, 3, 0, 4, 6, 0, 0, 2, 8, 8, 0, 4, 0, 2, 0, 0, 6, 6, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 6, 4, 0, 0, 0, 0, 8, 0, 2, 0, 7, 0, 2, 8, 0, 0, 8, 0, 8, 0, 0, 6, 8, 0, 0, 0, 0]

cp's OEIS Frontend

A231817 Multiplicative digital root of concatenation of all divisors of n (A037278).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	8
5	5
6	8
7	7
8	8
9	4
10	0
11	1
12	6
13	3
14	0
15	5
16	0
17	7
18	0
19	9
20	0
21	8
22	8
23	6
24	8
25	0
26	4
27	6
28	0
29	8
30	0
31	3
32	0
33	4
34	6
35	0
36	0
37	2
38	8
39	8
40	0
41	4
42	0
43	2
44	0
45	0
46	6
47	6
48	0
49	0
50	0
51	0
52	0
53	5
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	6
62	4
63	0
64	0
65	0
66	0
67	8
68	0
69	2
70	0
71	7
72	0
73	2
74	8
75	0
76	0
77	8
78	0
79	8
80	0
81	0
82	6
83	8
84	0
85	0
86	0
87	0

n	a(n)
1	1
2	2
3	3
4	8
5	5
6	8
7	7
8	8
9	4
10	0
11	1
12	6
13	3
14	0
15	5
16	0
17	7
18	0
19	9
20	0
21	8
22	8
23	6
24	8
25	0
26	4
27	6
28	0
29	8
30	0
31	3
32	0
33	4
34	6
35	0
36	0
37	2
38	8
39	8
40	0
41	4
42	0
43	2
44	0
45	0
46	6
47	6
48	0
49	0
50	0
51	0
52	0
53	5
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	6
62	4
63	0
64	0
65	0
66	0
67	8
68	0
69	2
70	0
71	7
72	0
73	2
74	8
75	0
76	0
77	8
78	0
79	8
80	0
81	0
82	6
83	8
84	0
85	0
86	0
87	0

n	a(n)
1	1
2	2
3	3
4	8
5	5
6	8
7	7
8	8
9	4
10	0
11	1
12	6
13	3
14	0
15	5
16	0
17	7
18	0
19	9
20	0
21	8
22	8
23	6
24	8
25	0
26	4
27	6
28	0
29	8
30	0
31	3
32	0
33	4
34	6
35	0
36	0
37	2
38	8
39	8
40	0
41	4
42	0
43	2
44	0
45	0
46	6
47	6
48	0
49	0
50	0
51	0
52	0
53	5
54	0
55	0
56	0
57	0
58	0
59	0
60	0
61	6
62	4
63	0
64	0
65	0
66	0
67	8
68	0
69	2
70	0
71	7
72	0
73	2
74	8
75	0
76	0
77	8
78	0
79	8
80	0
81	0
82	6
83	8
84	0
85	0
86	0
87	0