18872997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:134

約数の個数: 64

約数和(自身を含む): 32175360

約数和(自身を除く): 13302363

約数列:

[1, 3, 11, 13, 29, 33, 37, 39, 41, 87, 111, 123, 143, 319, 377, 407, 429, 451, 481, 533, 957, 1073, 1131, 1189, 1221, 1353, 1443, 1517, 1599, 3219, 3567, 4147, 4551, 5291, 5863, 11803, 12441, 13079, 13949, 15457, 15873, 16687, 17589, 19721, 35409, 39237, 41847, 43993, 46371, 50061, 59163, 131979, 153439, 170027, 216931, 460317, 483923, 510081, 571909, 650793, 1451769, 1715727, 6290999, 18872997]

約数ペア:

[(1, 18872997), (3, 6290999), (11, 1715727), (13, 1451769), (29, 650793), (33, 571909), (37, 510081), (39, 483923), (41, 460317), (87, 216931), (111, 170027), (123, 153439), (143, 131979), (319, 59163), (377, 50061), (407, 46371), (429, 43993), (451, 41847), (481, 39237), (533, 35409), (957, 19721), (1073, 17589), (1131, 16687), (1189, 15873), (1221, 15457), (1353, 13949), (1443, 13079), (1517, 12441), (1599, 11803), (3219, 5863), (3567, 5291), (4147, 4551)]