21571580

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 46781280

約数和(自身を除く): 25209700

約数列:

[1, 2, 4, 5, 10, 20, 59, 101, 118, 181, 202, 236, 295, 362, 404, 505, 590, 724, 905, 1010, 1180, 1810, 2020, 3620, 5959, 10679, 11918, 18281, 21358, 23836, 29795, 36562, 42716, 53395, 59590, 73124, 91405, 106790, 119180, 182810, 213580, 365620, 1078579, 2157158, 4314316, 5392895, 10785790, 21571580]

約数ペア:

[(1, 21571580), (2, 10785790), (4, 5392895), (5, 4314316), (10, 2157158), (20, 1078579), (59, 365620), (101, 213580), (118, 182810), (181, 119180), (202, 106790), (236, 91405), (295, 73124), (362, 59590), (404, 53395), (505, 42716), (590, 36562), (724, 29795), (905, 23836), (1010, 21358), (1180, 18281), (1810, 11918), (2020, 10679), (3620, 5959)]