28393981

素因数分解:

$7^2\times {\mathrm{11}}^2\times {\mathrm{4789}}^1$

素因数の和:4825

約数の個数: 18

約数和(自身を含む): 36312990

約数和(自身を除く): 7919009

約数列:

[1, 7, 11, 49, 77, 121, 539, 847, 4789, 5929, 33523, 52679, 234661, 368753, 579469, 2581271, 4056283, 28393981]

約数ペア:

[(1, 28393981), (7, 4056283), (11, 2581271), (49, 579469), (77, 368753), (121, 234661), (539, 52679), (847, 33523), (4789, 5929)]