A378548 - cp's OEIS frontend

A378548 Sum of divisors d of n such that n/d is odd with an even number of prime factors (counted with multiplicity).

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

[1, 2, 3, 4, 5, 6, 7, 8, 10, 10, 11, 12, 13, 14, 16, 16, 17, 20, 19, 20, 22, 22, 23, 24, 26, 26, 30, 28, 29, 32, 31, 32, 34, 34, 36, 40, 37, 38, 40, 40, 41, 44, 43, 44, 53, 46, 47, 48, 50, 52, 52, 52, 53, 60, 56, 56, 58, 58, 59, 64, 61, 62, 73, 64, 66, 68, 67, 68, 70, 72, 71, 80, 73, 74, 83, 76, 78, 80, 79, 80, 91, 82]

cp's OEIS Frontend

A378548 Sum of divisors d of n such that n/d is odd with 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	4
5	5
6	6
7	7
8	8
9	10
10	10
11	11
12	12
13	13
14	14
15	16
16	16
17	17
18	20
19	19
20	20
21	22
22	22
23	23
24	24
25	26
26	26
27	30
28	28
29	29
30	32
31	31
32	32
33	34
34	34
35	36
36	40
37	37
38	38
39	40
40	40
41	41
42	44
43	43
44	44
45	53
46	46
47	47
48	48
49	50
50	52
51	52
52	52
53	53
54	60
55	56
56	56
57	58
58	58
59	59
60	64
61	61
62	62
63	73
64	64
65	66
66	68
67	67
68	68
69	70
70	72
71	71
72	80
73	73
74	74
75	83
76	76
77	78
78	80
79	79
80	80
81	91
82	82

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

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