A286972 - cp's OEIS frontend

A286972 Numbers k such that the average of the prime power divisors (not including 1) of k is an integer.

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	11
8	12
9	13
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	43
26	47
27	49
28	51
29	53
30	55
31	57
32	59
33	61
34	64
35	65
36	67
37	69
38	71
39	73
40	75
41	77
42	78
43	79
44	80
45	81
46	83
47	84
48	85
49	87
50	89
51	91
52	93
53	95
54	97
55	100
56	101
57	103
58	105
59	107
60	108
61	109
62	110
63	111
64	113
65	114
66	115
67	119
68	121
69	123
70	127
71	129
72	131
73	132
74	133
75	135
76	137
77	139

[2, 3, 4, 5, 7, 9, 11, 12, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 42, 43, 47, 49, 51, 53, 55, 57, 59, 61, 64, 65, 67, 69, 71, 73, 75, 77, 78, 79, 80, 81, 83, 84, 85, 87, 89, 91, 93, 95, 97, 100, 101, 103, 105, 107, 108, 109, 110, 111, 113, 114, 115, 119, 121, 123, 127, 129, 131, 132, 133, 135, 137, 139]

cp's OEIS Frontend

A286972 Numbers k such that the average of the prime power divisors (not including 1) of k is an integer.

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	11
8	12
9	13
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	43
26	47
27	49
28	51
29	53
30	55
31	57
32	59
33	61
34	64
35	65
36	67
37	69
38	71
39	73
40	75
41	77
42	78
43	79
44	80
45	81
46	83
47	84
48	85
49	87
50	89
51	91
52	93
53	95
54	97
55	100
56	101
57	103
58	105
59	107
60	108
61	109
62	110
63	111
64	113
65	114
66	115
67	119
68	121
69	123
70	127
71	129
72	131
73	132
74	133
75	135
76	137
77	139

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	11
8	12
9	13
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	43
26	47
27	49
28	51
29	53
30	55
31	57
32	59
33	61
34	64
35	65
36	67
37	69
38	71
39	73
40	75
41	77
42	78
43	79
44	80
45	81
46	83
47	84
48	85
49	87
50	89
51	91
52	93
53	95
54	97
55	100
56	101
57	103
58	105
59	107
60	108
61	109
62	110
63	111
64	113
65	114
66	115
67	119
68	121
69	123
70	127
71	129
72	131
73	132
74	133
75	135
76	137
77	139

n	a(n)
1	2
2	3
3	4
4	5
5	7
6	9
7	11
8	12
9	13
10	15
11	17
12	19
13	21
14	23
15	25
16	27
17	29
18	31
19	33
20	35
21	37
22	39
23	41
24	42
25	43
26	47
27	49
28	51
29	53
30	55
31	57
32	59
33	61
34	64
35	65
36	67
37	69
38	71
39	73
40	75
41	77
42	78
43	79
44	80
45	81
46	83
47	84
48	85
49	87
50	89
51	91
52	93
53	95
54	97
55	100
56	101
57	103
58	105
59	107
60	108
61	109
62	110
63	111
64	113
65	114
66	115
67	119
68	121
69	123
70	127
71	129
72	131
73	132
74	133
75	135
76	137
77	139