A378542 - cp's OEIS frontend

A378542 Sum of divisors d of n such that n/d has an even number of prime factors (counted with multiplicity).

n	a(n)
1	1
2	2
3	3
4	5
5	5
6	7
7	7
8	10
9	10
10	11
11	11
12	17
13	13
14	15
15	16
16	21
17	17
18	23
19	19
20	27
21	22
22	23
23	23
24	35
25	26
26	27
27	30
28	37
29	29
30	40
31	31
32	42
33	34
34	35
35	36
36	56
37	37
38	39
39	40
40	55
41	41
42	54
43	43
44	57
45	53
46	47
47	47
48	73
49	50
50	57
51	52
52	67
53	53
54	70
55	56
56	75
57	58
58	59
59	59
60	96
61	61
62	63
63	73
64	85
65	66
66	82
67	67
68	87
69	70
70	84
71	71
72	115
73	73
74	75
75	83
76	97
77	78
78	96
79	79
80	115
81	91

[1, 2, 3, 5, 5, 7, 7, 10, 10, 11, 11, 17, 13, 15, 16, 21, 17, 23, 19, 27, 22, 23, 23, 35, 26, 27, 30, 37, 29, 40, 31, 42, 34, 35, 36, 56, 37, 39, 40, 55, 41, 54, 43, 57, 53, 47, 47, 73, 50, 57, 52, 67, 53, 70, 56, 75, 58, 59, 59, 96, 61, 63, 73, 85, 66, 82, 67, 87, 70, 84, 71, 115, 73, 75, 83, 97, 78, 96, 79, 115, 91]

cp's OEIS Frontend

A378542 Sum of divisors d of n such that n/d has an even number of prime factors (counted with multiplicity).

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	5
5	5
6	7
7	7
8	10
9	10
10	11
11	11
12	17
13	13
14	15
15	16
16	21
17	17
18	23
19	19
20	27
21	22
22	23
23	23
24	35
25	26
26	27
27	30
28	37
29	29
30	40
31	31
32	42
33	34
34	35
35	36
36	56
37	37
38	39
39	40
40	55
41	41
42	54
43	43
44	57
45	53
46	47
47	47
48	73
49	50
50	57
51	52
52	67
53	53
54	70
55	56
56	75
57	58
58	59
59	59
60	96
61	61
62	63
63	73
64	85
65	66
66	82
67	67
68	87
69	70
70	84
71	71
72	115
73	73
74	75
75	83
76	97
77	78
78	96
79	79
80	115
81	91

n	a(n)
1	1
2	2
3	3
4	5
5	5
6	7
7	7
8	10
9	10
10	11
11	11
12	17
13	13
14	15
15	16
16	21
17	17
18	23
19	19
20	27
21	22
22	23
23	23
24	35
25	26
26	27
27	30
28	37
29	29
30	40
31	31
32	42
33	34
34	35
35	36
36	56
37	37
38	39
39	40
40	55
41	41
42	54
43	43
44	57
45	53
46	47
47	47
48	73
49	50
50	57
51	52
52	67
53	53
54	70
55	56
56	75
57	58
58	59
59	59
60	96
61	61
62	63
63	73
64	85
65	66
66	82
67	67
68	87
69	70
70	84
71	71
72	115
73	73
74	75
75	83
76	97
77	78
78	96
79	79
80	115
81	91

n	a(n)
1	1
2	2
3	3
4	5
5	5
6	7
7	7
8	10
9	10
10	11
11	11
12	17
13	13
14	15
15	16
16	21
17	17
18	23
19	19
20	27
21	22
22	23
23	23
24	35
25	26
26	27
27	30
28	37
29	29
30	40
31	31
32	42
33	34
34	35
35	36
36	56
37	37
38	39
39	40
40	55
41	41
42	54
43	43
44	57
45	53
46	47
47	47
48	73
49	50
50	57
51	52
52	67
53	53
54	70
55	56
56	75
57	58
58	59
59	59
60	96
61	61
62	63
63	73
64	85
65	66
66	82
67	67
68	87
69	70
70	84
71	71
72	115
73	73
74	75
75	83
76	97
77	78
78	96
79	79
80	115
81	91