21079531

素因数分解:

${\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 24993360

約数和(自身を除く): 3913829

約数列:

[1, 11, 19, 53, 121, 173, 209, 583, 1007, 1903, 2299, 3287, 6413, 9169, 11077, 20933, 36157, 100859, 121847, 174211, 397727, 1109449, 1916321, 21079531]

約数ペア:

[(1, 21079531), (11, 1916321), (19, 1109449), (53, 397727), (121, 174211), (173, 121847), (209, 100859), (583, 36157), (1007, 20933), (1903, 11077), (2299, 9169), (3287, 6413)]