81153320

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{137}}^1\times {\mathrm{251}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 187790400

約数和(自身を除く): 106637080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 137, 236, 251, 274, 295, 472, 502, 548, 590, 685, 1004, 1096, 1180, 1255, 1370, 2008, 2360, 2510, 2740, 5020, 5480, 8083, 10040, 14809, 16166, 29618, 32332, 34387, 40415, 59236, 64664, 68774, 74045, 80830, 118472, 137548, 148090, 161660, 171935, 275096, 296180, 323320, 343870, 592360, 687740, 1375480, 2028833, 4057666, 8115332, 10144165, 16230664, 20288330, 40576660, 81153320]

約数ペア:

[(1, 81153320), (2, 40576660), (4, 20288330), (5, 16230664), (8, 10144165), (10, 8115332), (20, 4057666), (40, 2028833), (59, 1375480), (118, 687740), (137, 592360), (236, 343870), (251, 323320), (274, 296180), (295, 275096), (472, 171935), (502, 161660), (548, 148090), (590, 137548), (685, 118472), (1004, 80830), (1096, 74045), (1180, 68774), (1255, 64664), (1370, 59236), (2008, 40415), (2360, 34387), (2510, 32332), (2740, 29618), (5020, 16166), (5480, 14809), (8083, 10040)]