21961918

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43403}}^1$

素因数の和:43439

約数の個数: 16

約数和(自身を含む): 37501056

約数和(自身を除く): 15539138

約数列:

[1, 2, 11, 22, 23, 46, 253, 506, 43403, 86806, 477433, 954866, 998269, 1996538, 10980959, 21961918]

約数ペア:

[(1, 21961918), (2, 10980959), (11, 1996538), (22, 998269), (23, 954866), (46, 477433), (253, 86806), (506, 43403)]