A248577 - cp's OEIS frontend

A248577 Product of the number of divisors of n and the number of distinct prime divisors of n; i.e., tau(n) * omega(n).

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

[0, 2, 2, 3, 2, 8, 2, 4, 3, 8, 2, 12, 2, 8, 8, 5, 2, 12, 2, 12, 8, 8, 2, 16, 3, 8, 4, 12, 2, 24, 2, 6, 8, 8, 8, 18, 2, 8, 8, 16, 2, 24, 2, 12, 12, 8, 2, 20, 3, 12, 8, 12, 2, 16, 8, 16, 8, 8, 2, 36, 2, 8, 12, 7, 8, 24, 2, 12, 8, 24, 2, 24, 2, 8, 12, 12, 8, 24]

cp's OEIS Frontend

A248577 Product of the number of divisors of n and the number of distinct prime divisors of n; i.e., tau(n) * omega(n).

Table of values

List of values

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

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

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