21879891

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{7621}}^1$

素因数の和:7667

約数の個数: 24

約数和(自身を含む): 35670960

約数和(自身を除く): 13791069

約数列:

[1, 3, 9, 11, 29, 33, 87, 99, 261, 319, 957, 2871, 7621, 22863, 68589, 83831, 221009, 251493, 663027, 754479, 1989081, 2431099, 7293297, 21879891]

約数ペア:

[(1, 21879891), (3, 7293297), (9, 2431099), (11, 1989081), (29, 754479), (33, 663027), (87, 251493), (99, 221009), (261, 83831), (319, 68589), (957, 22863), (2871, 7621)]