A109421 - cp's OEIS frontend

A109421 Numbers n such that tau(n)/bigomega(n) is an integer [tau(n)=number of divisors of n; bigomega(n)=number of prime divisors of n, counted with multiplicities].

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

[2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 26, 28, 29, 31, 33, 34, 35, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65, 67, 68, 69, 71, 73, 74, 75, 76, 77, 79, 80, 82, 83, 84, 85, 86, 87, 88, 89]

cp's OEIS Frontend

A109421 Numbers n such that tau(n)/bigomega(n) is an integer [tau(n)=number of divisors of n; bigomega(n)=number of prime divisors of n, counted with multiplicities].

Table of values

List of values

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

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

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