20101972

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{1013}}^1$

素因数の和:1080

約数の個数: 36

約数和(自身を含む): 39649428

約数和(自身を除く): 19547456

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 121, 164, 242, 451, 484, 902, 1013, 1804, 2026, 4052, 4961, 9922, 11143, 19844, 22286, 41533, 44572, 83066, 122573, 166132, 245146, 456863, 490292, 913726, 1827452, 5025493, 10050986, 20101972]

約数ペア:

[(1, 20101972), (2, 10050986), (4, 5025493), (11, 1827452), (22, 913726), (41, 490292), (44, 456863), (82, 245146), (121, 166132), (164, 122573), (242, 83066), (451, 44572), (484, 41533), (902, 22286), (1013, 19844), (1804, 11143), (2026, 9922), (4052, 4961)]