A353900 - cp's OEIS frontend

A353900 a(n) is the sum of divisors of n whose exponents in their prime factorizations are all powers of 2 (A138302).

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	7
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	23
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	28
25	31
26	42
27	13
28	56
29	30
30	72
31	32
32	23
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	92
49	57
50	93
51	72
52	98
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	23
65	84
66	144

[1, 3, 4, 7, 6, 12, 8, 7, 13, 18, 12, 28, 14, 24, 24, 23, 18, 39, 20, 42, 32, 36, 24, 28, 31, 42, 13, 56, 30, 72, 32, 23, 48, 54, 48, 91, 38, 60, 56, 42, 42, 96, 44, 84, 78, 72, 48, 92, 57, 93, 72, 98, 54, 39, 72, 56, 80, 90, 60, 168, 62, 96, 104, 23, 84, 144]

cp's OEIS Frontend

A353900 a(n) is the sum of divisors of n whose exponents in their prime factorizations are all powers of 2 (A138302).

Table of values

List of values

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	7
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	23
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	28
25	31
26	42
27	13
28	56
29	30
30	72
31	32
32	23
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	92
49	57
50	93
51	72
52	98
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	23
65	84
66	144

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	7
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	23
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	28
25	31
26	42
27	13
28	56
29	30
30	72
31	32
32	23
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	92
49	57
50	93
51	72
52	98
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	23
65	84
66	144

n	a(n)
1	1
2	3
3	4
4	7
5	6
6	12
7	8
8	7
9	13
10	18
11	12
12	28
13	14
14	24
15	24
16	23
17	18
18	39
19	20
20	42
21	32
22	36
23	24
24	28
25	31
26	42
27	13
28	56
29	30
30	72
31	32
32	23
33	48
34	54
35	48
36	91
37	38
38	60
39	56
40	42
41	42
42	96
43	44
44	84
45	78
46	72
47	48
48	92
49	57
50	93
51	72
52	98
53	54
54	39
55	72
56	56
57	80
58	90
59	60
60	168
61	62
62	96
63	104
64	23
65	84
66	144