20991322

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{127}}^1\times {\mathrm{683}}^1$

素因数の和:834

約数の個数: 24

約数和(自身を含む): 34933248

約数和(自身を除く): 13941926

約数列:

[1, 2, 11, 22, 121, 127, 242, 254, 683, 1366, 1397, 2794, 7513, 15026, 15367, 30734, 82643, 86741, 165286, 173482, 954151, 1908302, 10495661, 20991322]

約数ペア:

[(1, 20991322), (2, 10495661), (11, 1908302), (22, 954151), (121, 173482), (127, 165286), (242, 86741), (254, 82643), (683, 30734), (1366, 15367), (1397, 15026), (2794, 7513)]