21713377

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{241}}^1$

素因数の和:520

約数の個数: 16

約数和(自身を含む): 25446784

約数和(自身を除く): 3733407

約数列:

[1, 7, 61, 211, 241, 427, 1477, 1687, 12871, 14701, 50851, 90097, 102907, 355957, 3101911, 21713377]

約数ペア:

[(1, 21713377), (7, 3101911), (61, 355957), (211, 102907), (241, 90097), (427, 50851), (1477, 14701), (1687, 12871)]