21388774

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{9439}}^1$

素因数の和:9555

約数の個数: 16

約数和(自身を含む): 35343360

約数和(自身を除く): 13954586

約数列:

[1, 2, 11, 22, 103, 206, 1133, 2266, 9439, 18878, 103829, 207658, 972217, 1944434, 10694387, 21388774]

約数ペア:

[(1, 21388774), (2, 10694387), (11, 1944434), (22, 972217), (103, 207658), (206, 103829), (1133, 18878), (2266, 9439)]