A187680 - cp's OEIS frontend

A187680 a(n) = (product of divisors of n) mod (sum of divisors of n).

n	a(n)
1	0
2	2
3	3
4	1
5	5
6	0
7	7
8	4
9	1
10	10
11	11
12	20
13	13
14	4
15	9
16	1
17	17
18	21
19	19
20	20
21	25
22	16
23	23
24	36
25	1
26	4
27	9
28	0
29	29
30	0
31	31
32	8
33	33
34	22
35	25
36	83
37	37
38	4
39	9
40	40
41	41
42	48
43	43
44	8
45	21
46	28
47	47
48	88
49	1
50	8
51	9
52	76
53	53
54	96
55	1
56	16
57	49
58	34
59	59
60	120
61	61
62	4
63	31
64	1

[0, 2, 3, 1, 5, 0, 7, 4, 1, 10, 11, 20, 13, 4, 9, 1, 17, 21, 19, 20, 25, 16, 23, 36, 1, 4, 9, 0, 29, 0, 31, 8, 33, 22, 25, 83, 37, 4, 9, 40, 41, 48, 43, 8, 21, 28, 47, 88, 1, 8, 9, 76, 53, 96, 1, 16, 49, 34, 59, 120, 61, 4, 31, 1]

cp's OEIS Frontend

A187680 a(n) = (product of divisors of n) mod (sum of divisors of n).

Table of values

List of values

n	a(n)
1	0
2	2
3	3
4	1
5	5
6	0
7	7
8	4
9	1
10	10
11	11
12	20
13	13
14	4
15	9
16	1
17	17
18	21
19	19
20	20
21	25
22	16
23	23
24	36
25	1
26	4
27	9
28	0
29	29
30	0
31	31
32	8
33	33
34	22
35	25
36	83
37	37
38	4
39	9
40	40
41	41
42	48
43	43
44	8
45	21
46	28
47	47
48	88
49	1
50	8
51	9
52	76
53	53
54	96
55	1
56	16
57	49
58	34
59	59
60	120
61	61
62	4
63	31
64	1

n	a(n)
1	0
2	2
3	3
4	1
5	5
6	0
7	7
8	4
9	1
10	10
11	11
12	20
13	13
14	4
15	9
16	1
17	17
18	21
19	19
20	20
21	25
22	16
23	23
24	36
25	1
26	4
27	9
28	0
29	29
30	0
31	31
32	8
33	33
34	22
35	25
36	83
37	37
38	4
39	9
40	40
41	41
42	48
43	43
44	8
45	21
46	28
47	47
48	88
49	1
50	8
51	9
52	76
53	53
54	96
55	1
56	16
57	49
58	34
59	59
60	120
61	61
62	4
63	31
64	1

n	a(n)
1	0
2	2
3	3
4	1
5	5
6	0
7	7
8	4
9	1
10	10
11	11
12	20
13	13
14	4
15	9
16	1
17	17
18	21
19	19
20	20
21	25
22	16
23	23
24	36
25	1
26	4
27	9
28	0
29	29
30	0
31	31
32	8
33	33
34	22
35	25
36	83
37	37
38	4
39	9
40	40
41	41
42	48
43	43
44	8
45	21
46	28
47	47
48	88
49	1
50	8
51	9
52	76
53	53
54	96
55	1
56	16
57	49
58	34
59	59
60	120
61	61
62	4
63	31
64	1