19999761

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 28712160

約数和(自身を除く): 8712399

約数列:

[1, 3, 19, 57, 59, 177, 313, 361, 939, 1083, 1121, 3363, 5947, 17841, 18467, 21299, 55401, 63897, 112993, 338979, 350873, 1052619, 6666587, 19999761]

約数ペア:

[(1, 19999761), (3, 6666587), (19, 1052619), (57, 350873), (59, 338979), (177, 112993), (313, 63897), (361, 55401), (939, 21299), (1083, 18467), (1121, 17841), (3363, 5947)]