21687908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{1373}}^1$

素因数の和:1747

約数の個数: 24

約数和(自身を含む): 41549760

約数和(自身を除く): 19861852

約数列:

[1, 2, 4, 11, 22, 44, 359, 718, 1373, 1436, 2746, 3949, 5492, 7898, 15103, 15796, 30206, 60412, 492907, 985814, 1971628, 5421977, 10843954, 21687908]

約数ペア:

[(1, 21687908), (2, 10843954), (4, 5421977), (11, 1971628), (22, 985814), (44, 492907), (359, 60412), (718, 30206), (1373, 15796), (1436, 15103), (2746, 7898), (3949, 5492)]