21388653

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{16619}}^1$

素因数の和:16649

約数の個数: 24

約数和(自身を含む): 36298080

約数和(自身を除く): 14909427

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 429, 1287, 16619, 49857, 149571, 182809, 216047, 548427, 648141, 1645281, 1944423, 2376517, 7129551, 21388653]

約数ペア:

[(1, 21388653), (3, 7129551), (9, 2376517), (11, 1944423), (13, 1645281), (33, 648141), (39, 548427), (99, 216047), (117, 182809), (143, 149571), (429, 49857), (1287, 16619)]