21191859

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9533}}^1$

素因数の和:9571

約数の個数: 24

約数和(自身を含む): 34703760

約数和(自身を除く): 13511901

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9533, 28599, 85797, 123929, 181127, 371787, 543381, 1115361, 1630143, 2354651, 7063953, 21191859]

約数ペア:

[(1, 21191859), (3, 7063953), (9, 2354651), (13, 1630143), (19, 1115361), (39, 543381), (57, 371787), (117, 181127), (171, 123929), (247, 85797), (741, 28599), (2223, 9533)]