21128514

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{2833}}^1$

素因数の和:2962

約数の個数: 32

約数和(自身を含む): 46522944

約数和(自身を除く): 25394430

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 113, 226, 339, 678, 1243, 2486, 2833, 3729, 5666, 7458, 8499, 16998, 31163, 62326, 93489, 186978, 320129, 640258, 960387, 1920774, 3521419, 7042838, 10564257, 21128514]

約数ペア:

[(1, 21128514), (2, 10564257), (3, 7042838), (6, 3521419), (11, 1920774), (22, 960387), (33, 640258), (66, 320129), (113, 186978), (226, 93489), (339, 62326), (678, 31163), (1243, 16998), (2486, 8499), (2833, 7458), (3729, 5666)]