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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A245787 Numbers n such that tau(n)*sigma(n) divides n^2.

Table of values

n a(n)
1 1
2 26208
3 56896
4 293760
5 997920
6 9694080
7 23569920
8 25159680
9 29669760
10 67858560
11 117849600
12 132723360
13 208565280
14 222963840
15 276756480
16 427714560
17 513786240
18 578672640
19 628992000
20 649503360
21 688279680
22 714954240
23 779950080
24 830269440
25 979102080
26 1037266560

List of values

[1, 26208, 56896, 293760, 997920, 9694080, 23569920, 25159680, 29669760, 67858560, 117849600, 132723360, 208565280, 222963840, 276756480, 427714560, 513786240, 578672640, 628992000, 649503360, 688279680, 714954240, 779950080, 830269440, 979102080, 1037266560]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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