21122916

素因数分解:

$2^2\times 3^1\times {\mathrm{661}}^1\times {\mathrm{2663}}^1$

素因数の和:3331

約数の個数: 24

約数和(自身を含む): 49379904

約数和(自身を除く): 28256988

約数列:

[1, 2, 3, 4, 6, 12, 661, 1322, 1983, 2644, 2663, 3966, 5326, 7932, 7989, 10652, 15978, 31956, 1760243, 3520486, 5280729, 7040972, 10561458, 21122916]

約数ペア:

[(1, 21122916), (2, 10561458), (3, 7040972), (4, 5280729), (6, 3520486), (12, 1760243), (661, 31956), (1322, 15978), (1983, 10652), (2644, 7989), (2663, 7932), (3966, 5326)]