A318677 - cp's OEIS frontend

A318677 Sum of divisors of n that have an odd number of prime factors (counted with multiplicity).

n	a(n)
1	0
2	2
3	3
4	2
5	5
6	5
7	7
8	10
9	3
10	7
11	11
12	17
13	13
14	9
15	8
16	10
17	17
18	23
19	19
20	27
21	10
22	13
23	23
24	25
25	5
26	15
27	30
28	37
29	29
30	40
31	31
32	42
33	14
34	19
35	12
36	35
37	37
38	21
39	16
40	35
41	41
42	54
43	43
44	57
45	53
46	25
47	47
48	73
49	7
50	57
51	20
52	67
53	53
54	50
55	16
56	45
57	22
58	31
59	59
60	72
61	61
62	33
63	73
64	42
65	18
66	82
67	67
68	87
69	26
70	84
71	71
72	115
73	73
74	39
75	83
76	97
77	18
78	96
79	79
80	115
81	30
82	43
83	83
84	94
85	22
86	45
87	32

[0, 2, 3, 2, 5, 5, 7, 10, 3, 7, 11, 17, 13, 9, 8, 10, 17, 23, 19, 27, 10, 13, 23, 25, 5, 15, 30, 37, 29, 40, 31, 42, 14, 19, 12, 35, 37, 21, 16, 35, 41, 54, 43, 57, 53, 25, 47, 73, 7, 57, 20, 67, 53, 50, 16, 45, 22, 31, 59, 72, 61, 33, 73, 42, 18, 82, 67, 87, 26, 84, 71, 115, 73, 39, 83, 97, 18, 96, 79, 115, 30, 43, 83, 94, 22, 45, 32]

cp's OEIS Frontend

A318677 Sum of divisors of n that have an odd number of prime factors (counted with multiplicity).

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	2
5	5
6	5
7	7
8	10
9	3
10	7
11	11
12	17
13	13
14	9
15	8
16	10
17	17
18	23
19	19
20	27
21	10
22	13
23	23
24	25
25	5
26	15
27	30
28	37
29	29
30	40
31	31
32	42
33	14
34	19
35	12
36	35
37	37
38	21
39	16
40	35
41	41
42	54
43	43
44	57
45	53
46	25
47	47
48	73
49	7
50	57
51	20
52	67
53	53
54	50
55	16
56	45
57	22
58	31
59	59
60	72
61	61
62	33
63	73
64	42
65	18
66	82
67	67
68	87
69	26
70	84
71	71
72	115
73	73
74	39
75	83
76	97
77	18
78	96
79	79
80	115
81	30
82	43
83	83
84	94
85	22
86	45
87	32

n	a(n)
1	0
2	2
3	3
4	2
5	5
6	5
7	7
8	10
9	3
10	7
11	11
12	17
13	13
14	9
15	8
16	10
17	17
18	23
19	19
20	27
21	10
22	13
23	23
24	25
25	5
26	15
27	30
28	37
29	29
30	40
31	31
32	42
33	14
34	19
35	12
36	35
37	37
38	21
39	16
40	35
41	41
42	54
43	43
44	57
45	53
46	25
47	47
48	73
49	7
50	57
51	20
52	67
53	53
54	50
55	16
56	45
57	22
58	31
59	59
60	72
61	61
62	33
63	73
64	42
65	18
66	82
67	67
68	87
69	26
70	84
71	71
72	115
73	73
74	39
75	83
76	97
77	18
78	96
79	79
80	115
81	30
82	43
83	83
84	94
85	22
86	45
87	32

n	a(n)
1	0
2	2
3	3
4	2
5	5
6	5
7	7
8	10
9	3
10	7
11	11
12	17
13	13
14	9
15	8
16	10
17	17
18	23
19	19
20	27
21	10
22	13
23	23
24	25
25	5
26	15
27	30
28	37
29	29
30	40
31	31
32	42
33	14
34	19
35	12
36	35
37	37
38	21
39	16
40	35
41	41
42	54
43	43
44	57
45	53
46	25
47	47
48	73
49	7
50	57
51	20
52	67
53	53
54	50
55	16
56	45
57	22
58	31
59	59
60	72
61	61
62	33
63	73
64	42
65	18
66	82
67	67
68	87
69	26
70	84
71	71
72	115
73	73
74	39
75	83
76	97
77	18
78	96
79	79
80	115
81	30
82	43
83	83
84	94
85	22
86	45
87	32