388021473

素因数分解:

$3^2\times 7^1\times {\mathrm{881}}^1\times {\mathrm{6991}}^1$

素因数の和:7885

約数の個数: 24

約数和(自身を含む): 641362176

約数和(自身を除く): 253340703

約数列:

[1, 3, 7, 9, 21, 63, 881, 2643, 6167, 6991, 7929, 18501, 20973, 48937, 55503, 62919, 146811, 440433, 6159071, 18477213, 43113497, 55431639, 129340491, 388021473]

約数ペア:

[(1, 388021473), (3, 129340491), (7, 55431639), (9, 43113497), (21, 18477213), (63, 6159071), (881, 440433), (2643, 146811), (6167, 62919), (6991, 55503), (7929, 48937), (18501, 20973)]