138978879

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{947}}^1$

素因数の和:1087

約数の個数: 32

約数和(自身を含む): 206406144

約数和(自身を除く): 67427265

約数列:

[1, 3, 13, 39, 53, 71, 159, 213, 689, 923, 947, 2067, 2769, 2841, 3763, 11289, 12311, 36933, 48919, 50191, 67237, 146757, 150573, 201711, 652483, 874081, 1957449, 2622243, 3563561, 10690683, 46326293, 138978879]

約数ペア:

[(1, 138978879), (3, 46326293), (13, 10690683), (39, 3563561), (53, 2622243), (71, 1957449), (159, 874081), (213, 652483), (689, 201711), (923, 150573), (947, 146757), (2067, 67237), (2769, 50191), (2841, 48919), (3763, 36933), (11289, 12311)]