21220276

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68897}}^1$

素因数の和:68919

約数の個数: 24

約数和(自身を含む): 46299456

約数和(自身を除く): 25079180

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68897, 137794, 275588, 482279, 757867, 964558, 1515734, 1929116, 3031468, 5305069, 10610138, 21220276]

約数ペア:

[(1, 21220276), (2, 10610138), (4, 5305069), (7, 3031468), (11, 1929116), (14, 1515734), (22, 964558), (28, 757867), (44, 482279), (77, 275588), (154, 137794), (308, 68897)]