20556206

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{491}}^1$

素因数の和:688

約数の個数: 24

約数和(自身を含む): 34157592

約数和(自身を除く): 13601386

約数列:

[1, 2, 11, 22, 121, 173, 242, 346, 491, 982, 1903, 3806, 5401, 10802, 20933, 41866, 59411, 84943, 118822, 169886, 934373, 1868746, 10278103, 20556206]

約数ペア:

[(1, 20556206), (2, 10278103), (11, 1868746), (22, 934373), (121, 169886), (173, 118822), (242, 84943), (346, 59411), (491, 41866), (982, 20933), (1903, 10802), (3806, 5401)]