A318676 - cp's OEIS frontend

A318676 Sum of divisors of n that have an even number of prime factors (counted with multiplicity).

n	a(n)
1	1
2	1
3	1
4	5
5	1
6	7
7	1
8	5
9	10
10	11
11	1
12	11
13	1
14	15
15	16
16	21
17	1
18	16
19	1
20	15
21	22
22	23
23	1
24	35
25	26
26	27
27	10
28	19
29	1
30	32
31	1
32	21
33	34
34	35
35	36
36	56
37	1
38	39
39	40
40	55
41	1
42	42
43	1
44	27
45	25
46	47
47	1
48	51
49	50
50	36
51	52
52	31
53	1
54	70
55	56
56	75
57	58
58	59
59	1
60	96
61	1
62	63
63	31
64	85
65	66
66	62
67	1
68	39
69	70
70	60
71	1
72	80
73	1
74	75
75	41
76	43
77	78
78	72
79	1
80	71
81	91
82	83
83	1
84	130
85	86
86	87
87	88
88	115
89	1
90	131
91	92
92	51

[1, 1, 1, 5, 1, 7, 1, 5, 10, 11, 1, 11, 1, 15, 16, 21, 1, 16, 1, 15, 22, 23, 1, 35, 26, 27, 10, 19, 1, 32, 1, 21, 34, 35, 36, 56, 1, 39, 40, 55, 1, 42, 1, 27, 25, 47, 1, 51, 50, 36, 52, 31, 1, 70, 56, 75, 58, 59, 1, 96, 1, 63, 31, 85, 66, 62, 1, 39, 70, 60, 1, 80, 1, 75, 41, 43, 78, 72, 1, 71, 91, 83, 1, 130, 86, 87, 88, 115, 1, 131, 92, 51]

cp's OEIS Frontend

A318676 Sum of divisors of n that have an even number of prime factors (counted with multiplicity).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	5
5	1
6	7
7	1
8	5
9	10
10	11
11	1
12	11
13	1
14	15
15	16
16	21
17	1
18	16
19	1
20	15
21	22
22	23
23	1
24	35
25	26
26	27
27	10
28	19
29	1
30	32
31	1
32	21
33	34
34	35
35	36
36	56
37	1
38	39
39	40
40	55
41	1
42	42
43	1
44	27
45	25
46	47
47	1
48	51
49	50
50	36
51	52
52	31
53	1
54	70
55	56
56	75
57	58
58	59
59	1
60	96
61	1
62	63
63	31
64	85
65	66
66	62
67	1
68	39
69	70
70	60
71	1
72	80
73	1
74	75
75	41
76	43
77	78
78	72
79	1
80	71
81	91
82	83
83	1
84	130
85	86
86	87
87	88
88	115
89	1
90	131
91	92
92	51

n	a(n)
1	1
2	1
3	1
4	5
5	1
6	7
7	1
8	5
9	10
10	11
11	1
12	11
13	1
14	15
15	16
16	21
17	1
18	16
19	1
20	15
21	22
22	23
23	1
24	35
25	26
26	27
27	10
28	19
29	1
30	32
31	1
32	21
33	34
34	35
35	36
36	56
37	1
38	39
39	40
40	55
41	1
42	42
43	1
44	27
45	25
46	47
47	1
48	51
49	50
50	36
51	52
52	31
53	1
54	70
55	56
56	75
57	58
58	59
59	1
60	96
61	1
62	63
63	31
64	85
65	66
66	62
67	1
68	39
69	70
70	60
71	1
72	80
73	1
74	75
75	41
76	43
77	78
78	72
79	1
80	71
81	91
82	83
83	1
84	130
85	86
86	87
87	88
88	115
89	1
90	131
91	92
92	51

n	a(n)
1	1
2	1
3	1
4	5
5	1
6	7
7	1
8	5
9	10
10	11
11	1
12	11
13	1
14	15
15	16
16	21
17	1
18	16
19	1
20	15
21	22
22	23
23	1
24	35
25	26
26	27
27	10
28	19
29	1
30	32
31	1
32	21
33	34
34	35
35	36
36	56
37	1
38	39
39	40
40	55
41	1
42	42
43	1
44	27
45	25
46	47
47	1
48	51
49	50
50	36
51	52
52	31
53	1
54	70
55	56
56	75
57	58
58	59
59	1
60	96
61	1
62	63
63	31
64	85
65	66
66	62
67	1
68	39
69	70
70	60
71	1
72	80
73	1
74	75
75	41
76	43
77	78
78	72
79	1
80	71
81	91
82	83
83	1
84	130
85	86
86	87
87	88
88	115
89	1
90	131
91	92
92	51