20989276

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68147}}^1$

素因数の和:68169

約数の個数: 24

約数和(自身を含む): 45795456

約数和(自身を除く): 24806180

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68147, 136294, 272588, 477029, 749617, 954058, 1499234, 1908116, 2998468, 5247319, 10494638, 20989276]

約数ペア:

[(1, 20989276), (2, 10494638), (4, 5247319), (7, 2998468), (11, 1908116), (14, 1499234), (22, 954058), (28, 749617), (44, 477029), (77, 272588), (154, 136294), (308, 68147)]