208889219

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{521}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 269402112

約数和(自身を除く): 60512893

約数列:

[1, 7, 11, 41, 77, 127, 287, 451, 521, 889, 1397, 3157, 3647, 5207, 5731, 9779, 21361, 36449, 40117, 57277, 66167, 149527, 234971, 400939, 463169, 727837, 1644797, 2712847, 5094859, 18989929, 29841317, 208889219]

約数ペア:

[(1, 208889219), (7, 29841317), (11, 18989929), (41, 5094859), (77, 2712847), (127, 1644797), (287, 727837), (451, 463169), (521, 400939), (889, 234971), (1397, 149527), (3157, 66167), (3647, 57277), (5207, 40117), (5731, 36449), (9779, 21361)]