19968003

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1997}}^1$

素因数の和:2115

約数の個数: 24

約数和(自身を含む): 31792176

約数和(自身を除く): 11824173

約数列:

[1, 3, 9, 11, 33, 99, 101, 303, 909, 1111, 1997, 3333, 5991, 9999, 17973, 21967, 65901, 197703, 201697, 605091, 1815273, 2218667, 6656001, 19968003]

約数ペア:

[(1, 19968003), (3, 6656001), (9, 2218667), (11, 1815273), (33, 605091), (99, 201697), (101, 197703), (303, 65901), (909, 21967), (1111, 17973), (1997, 9999), (3333, 5991)]