A306510 - cp's OEIS frontend

A306510 Numbers k such that twice the number of divisors of k is equal to the number of divisors of the sum of digits of k.

n	a(n)
1	17
2	19
3	37
4	53
5	59
6	71
7	73
8	107
9	109
10	127
11	149
12	163
13	167
14	181
15	233
16	239
17	251
18	257
19	271
20	293
21	307
22	347
23	383
24	419
25	431
26	433
27	491
28	499
29	503
30	509
31	521
32	523
33	541
34	563
35	613
36	617
37	631
38	653
39	699
40	701
41	743
42	761
43	769
44	787
45	789
46	811
47	859
48	877
49	879
50	941
51	967

[17, 19, 37, 53, 59, 71, 73, 107, 109, 127, 149, 163, 167, 181, 233, 239, 251, 257, 271, 293, 307, 347, 383, 419, 431, 433, 491, 499, 503, 509, 521, 523, 541, 563, 613, 617, 631, 653, 699, 701, 743, 761, 769, 787, 789, 811, 859, 877, 879, 941, 967]

cp's OEIS Frontend

A306510 Numbers k such that twice the number of divisors of k is equal to the number of divisors of the sum of digits of k.

Table of values

List of values

n	a(n)
1	17
2	19
3	37
4	53
5	59
6	71
7	73
8	107
9	109
10	127
11	149
12	163
13	167
14	181
15	233
16	239
17	251
18	257
19	271
20	293
21	307
22	347
23	383
24	419
25	431
26	433
27	491
28	499
29	503
30	509
31	521
32	523
33	541
34	563
35	613
36	617
37	631
38	653
39	699
40	701
41	743
42	761
43	769
44	787
45	789
46	811
47	859
48	877
49	879
50	941
51	967

n	a(n)
1	17
2	19
3	37
4	53
5	59
6	71
7	73
8	107
9	109
10	127
11	149
12	163
13	167
14	181
15	233
16	239
17	251
18	257
19	271
20	293
21	307
22	347
23	383
24	419
25	431
26	433
27	491
28	499
29	503
30	509
31	521
32	523
33	541
34	563
35	613
36	617
37	631
38	653
39	699
40	701
41	743
42	761
43	769
44	787
45	789
46	811
47	859
48	877
49	879
50	941
51	967

n	a(n)
1	17
2	19
3	37
4	53
5	59
6	71
7	73
8	107
9	109
10	127
11	149
12	163
13	167
14	181
15	233
16	239
17	251
18	257
19	271
20	293
21	307
22	347
23	383
24	419
25	431
26	433
27	491
28	499
29	503
30	509
31	521
32	523
33	541
34	563
35	613
36	617
37	631
38	653
39	699
40	701
41	743
42	761
43	769
44	787
45	789
46	811
47	859
48	877
49	879
50	941
51	967