21389838

素因数分解:

$2^1\times 3^1\times {\mathrm{163}}^1\times {\mathrm{21871}}^1$

素因数の和:22039

約数の個数: 16

約数和(自身を含む): 43044096

約数和(自身を除く): 21654258

約数列:

[1, 2, 3, 6, 163, 326, 489, 978, 21871, 43742, 65613, 131226, 3564973, 7129946, 10694919, 21389838]

約数ペア:

[(1, 21389838), (2, 10694919), (3, 7129946), (6, 3564973), (163, 131226), (326, 65613), (489, 43742), (978, 21871)]