18804879

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7489}}^1$

素因数の和:7532

約数の個数: 20

約数和(自身を含む): 29001280

約数和(自身を除く): 10196401

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7489, 22467, 67401, 202203, 232159, 606609, 696477, 2089431, 6268293, 18804879]

約数ペア:

[(1, 18804879), (3, 6268293), (9, 2089431), (27, 696477), (31, 606609), (81, 232159), (93, 202203), (279, 67401), (837, 22467), (2511, 7489)]