A072514 - cp's OEIS frontend

A072514 Sum of n mod k for k in {1...n} with gcd(k,n) > 1.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	2
9	3
10	8
11	0
12	9
13	0
14	16
15	17
16	16
17	0
18	27
19	0
20	31
21	31
22	44
23	0
24	52
25	20
26	56
27	36
28	69
29	0
30	92
31	0
32	72
33	77
34	102
35	68
36	127
37	0
38	128
39	97
40	152
41	0
42	192
43	0
44	165
45	153
46	196
47	0
48	230
49	56
50	231
51	170
52	237
53	0
54	319
55	154
56	290
57	211
58	302
59	0
60	421
61	0
62	334
63	273
64	334
65	192
66	478
67	0
68	411
69	317

[0, 0, 0, 0, 0, 2, 0, 2, 3, 8, 0, 9, 0, 16, 17, 16, 0, 27, 0, 31, 31, 44, 0, 52, 20, 56, 36, 69, 0, 92, 0, 72, 77, 102, 68, 127, 0, 128, 97, 152, 0, 192, 0, 165, 153, 196, 0, 230, 56, 231, 170, 237, 0, 319, 154, 290, 211, 302, 0, 421, 0, 334, 273, 334, 192, 478, 0, 411, 317]

cp's OEIS Frontend

A072514 Sum of n mod k for k in {1...n} with gcd(k,n) > 1.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	2
9	3
10	8
11	0
12	9
13	0
14	16
15	17
16	16
17	0
18	27
19	0
20	31
21	31
22	44
23	0
24	52
25	20
26	56
27	36
28	69
29	0
30	92
31	0
32	72
33	77
34	102
35	68
36	127
37	0
38	128
39	97
40	152
41	0
42	192
43	0
44	165
45	153
46	196
47	0
48	230
49	56
50	231
51	170
52	237
53	0
54	319
55	154
56	290
57	211
58	302
59	0
60	421
61	0
62	334
63	273
64	334
65	192
66	478
67	0
68	411
69	317

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	2
9	3
10	8
11	0
12	9
13	0
14	16
15	17
16	16
17	0
18	27
19	0
20	31
21	31
22	44
23	0
24	52
25	20
26	56
27	36
28	69
29	0
30	92
31	0
32	72
33	77
34	102
35	68
36	127
37	0
38	128
39	97
40	152
41	0
42	192
43	0
44	165
45	153
46	196
47	0
48	230
49	56
50	231
51	170
52	237
53	0
54	319
55	154
56	290
57	211
58	302
59	0
60	421
61	0
62	334
63	273
64	334
65	192
66	478
67	0
68	411
69	317

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	2
7	0
8	2
9	3
10	8
11	0
12	9
13	0
14	16
15	17
16	16
17	0
18	27
19	0
20	31
21	31
22	44
23	0
24	52
25	20
26	56
27	36
28	69
29	0
30	92
31	0
32	72
33	77
34	102
35	68
36	127
37	0
38	128
39	97
40	152
41	0
42	192
43	0
44	165
45	153
46	196
47	0
48	230
49	56
50	231
51	170
52	237
53	0
54	319
55	154
56	290
57	211
58	302
59	0
60	421
61	0
62	334
63	273
64	334
65	192
66	478
67	0
68	411
69	317