20872621

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1297}}^1$

素因数の和:1345

約数の個数: 24

約数和(自身を含む): 27621440

約数和(自身を除く): 6748819

約数列:

[1, 7, 11, 19, 77, 121, 133, 209, 847, 1297, 1463, 2299, 9079, 14267, 16093, 24643, 99869, 156937, 172501, 271073, 1098559, 1897511, 2981803, 20872621]

約数ペア:

[(1, 20872621), (7, 2981803), (11, 1897511), (19, 1098559), (77, 271073), (121, 172501), (133, 156937), (209, 99869), (847, 24643), (1297, 16093), (1463, 14267), (2299, 9079)]