21091292

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{2861}}^1$

素因数の和:2981

約数の個数: 24

約数和(自身を含む): 39266640

約数和(自身を除く): 18175348

約数列:

[1, 2, 4, 19, 38, 76, 97, 194, 388, 1843, 2861, 3686, 5722, 7372, 11444, 54359, 108718, 217436, 277517, 555034, 1110068, 5272823, 10545646, 21091292]

約数ペア:

[(1, 21091292), (2, 10545646), (4, 5272823), (19, 1110068), (38, 555034), (76, 277517), (97, 217436), (194, 108718), (388, 54359), (1843, 11444), (2861, 7372), (3686, 5722)]