21871269

素因数分解:

$3^3\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1193}}^1$

素因数の和:1306

約数の個数: 32

約数和(自身を含む): 37443840

約数和(自身を除く): 15572571

約数列:

[1, 3, 7, 9, 21, 27, 63, 97, 189, 291, 679, 873, 1193, 2037, 2619, 3579, 6111, 8351, 10737, 18333, 25053, 32211, 75159, 115721, 225477, 347163, 810047, 1041489, 2430141, 3124467, 7290423, 21871269]

約数ペア:

[(1, 21871269), (3, 7290423), (7, 3124467), (9, 2430141), (21, 1041489), (27, 810047), (63, 347163), (97, 225477), (189, 115721), (291, 75159), (679, 32211), (873, 25053), (1193, 18333), (2037, 10737), (2619, 8351), (3579, 6111)]