19878287

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{37}}^1$

素因数の和:108

約数の個数: 36

約数和(自身を含む): 25618536

約数和(自身を除く): 5740249

約数列:

[1, 11, 13, 17, 37, 143, 169, 187, 221, 289, 407, 481, 629, 1859, 2431, 2873, 3179, 3757, 5291, 6253, 6919, 8177, 10693, 31603, 41327, 48841, 68783, 89947, 106301, 117623, 139009, 537251, 1169311, 1529099, 1807117, 19878287]

約数ペア:

[(1, 19878287), (11, 1807117), (13, 1529099), (17, 1169311), (37, 537251), (143, 139009), (169, 117623), (187, 106301), (221, 89947), (289, 68783), (407, 48841), (481, 41327), (629, 31603), (1859, 10693), (2431, 8177), (2873, 6919), (3179, 6253), (3757, 5291)]