678321

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:150

約数の個数: 32

約数和(自身を含む): 1191680

約数和(自身を除く): 513359

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 97, 111, 189, 259, 291, 333, 679, 777, 873, 999, 2037, 2331, 2619, 3589, 6111, 6993, 10767, 18333, 25123, 32301, 75369, 96903, 226107, 678321]

約数ペア:

[(1, 678321), (3, 226107), (7, 96903), (9, 75369), (21, 32301), (27, 25123), (37, 18333), (63, 10767), (97, 6993), (111, 6111), (189, 3589), (259, 2619), (291, 2331), (333, 2037), (679, 999), (777, 873)]