21404042

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{4889}}^1$

素因数の和:5101

約数の個数: 16

約数和(自身を含む): 35208000

約数和(自身を除く): 13803958

約数列:

[1, 2, 11, 22, 199, 398, 2189, 4378, 4889, 9778, 53779, 107558, 972911, 1945822, 10702021, 21404042]

約数ペア:

[(1, 21404042), (2, 10702021), (11, 1945822), (22, 972911), (199, 107558), (398, 53779), (2189, 9778), (4378, 4889)]