A033950 - cp's OEIS frontend

A033950 Refactorable numbers: number of divisors of k divides k. Also known as tau numbers.

n	a(n)
1	1
2	2
3	8
4	9
5	12
6	18
7	24
8	36
9	40
10	56
11	60
12	72
13	80
14	84
15	88
16	96
17	104
18	108
19	128
20	132
21	136
22	152
23	156
24	180
25	184
26	204
27	225
28	228
29	232
30	240
31	248
32	252
33	276
34	288
35	296
36	328
37	344
38	348
39	360
40	372
41	376
42	384
43	396
44	424
45	441
46	444
47	448
48	450
49	468
50	472
51	480
52	488
53	492
54	504
55	516
56	536

[1, 2, 8, 9, 12, 18, 24, 36, 40, 56, 60, 72, 80, 84, 88, 96, 104, 108, 128, 132, 136, 152, 156, 180, 184, 204, 225, 228, 232, 240, 248, 252, 276, 288, 296, 328, 344, 348, 360, 372, 376, 384, 396, 424, 441, 444, 448, 450, 468, 472, 480, 488, 492, 504, 516, 536]

cp's OEIS Frontend

A033950 Refactorable numbers: number of divisors of k divides k. Also known as tau numbers.

Table of values

List of values

n	a(n)
1	1
2	2
3	8
4	9
5	12
6	18
7	24
8	36
9	40
10	56
11	60
12	72
13	80
14	84
15	88
16	96
17	104
18	108
19	128
20	132
21	136
22	152
23	156
24	180
25	184
26	204
27	225
28	228
29	232
30	240
31	248
32	252
33	276
34	288
35	296
36	328
37	344
38	348
39	360
40	372
41	376
42	384
43	396
44	424
45	441
46	444
47	448
48	450
49	468
50	472
51	480
52	488
53	492
54	504
55	516
56	536

n	a(n)
1	1
2	2
3	8
4	9
5	12
6	18
7	24
8	36
9	40
10	56
11	60
12	72
13	80
14	84
15	88
16	96
17	104
18	108
19	128
20	132
21	136
22	152
23	156
24	180
25	184
26	204
27	225
28	228
29	232
30	240
31	248
32	252
33	276
34	288
35	296
36	328
37	344
38	348
39	360
40	372
41	376
42	384
43	396
44	424
45	441
46	444
47	448
48	450
49	468
50	472
51	480
52	488
53	492
54	504
55	516
56	536

n	a(n)
1	1
2	2
3	8
4	9
5	12
6	18
7	24
8	36
9	40
10	56
11	60
12	72
13	80
14	84
15	88
16	96
17	104
18	108
19	128
20	132
21	136
22	152
23	156
24	180
25	184
26	204
27	225
28	228
29	232
30	240
31	248
32	252
33	276
34	288
35	296
36	328
37	344
38	348
39	360
40	372
41	376
42	384
43	396
44	424
45	441
46	444
47	448
48	450
49	468
50	472
51	480
52	488
53	492
54	504
55	516
56	536