81236900

素因数分解:

$2^2\times 5^2\times {\mathrm{661}}^1\times {\mathrm{1229}}^1$

素因数の和:1904

約数の個数: 36

約数和(自身を含む): 176694420

約数和(自身を除く): 95457520

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 661, 1229, 1322, 2458, 2644, 3305, 4916, 6145, 6610, 12290, 13220, 16525, 24580, 30725, 33050, 61450, 66100, 122900, 812369, 1624738, 3249476, 4061845, 8123690, 16247380, 20309225, 40618450, 81236900]

約数ペア:

[(1, 81236900), (2, 40618450), (4, 20309225), (5, 16247380), (10, 8123690), (20, 4061845), (25, 3249476), (50, 1624738), (100, 812369), (661, 122900), (1229, 66100), (1322, 61450), (2458, 33050), (2644, 30725), (3305, 24580), (4916, 16525), (6145, 13220), (6610, 12290)]