18221121

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{239}}^1$

素因数の和:485

約数の個数: 24

約数和(自身を含む): 27181440

約数和(自身を除く): 8960319

約数列:

[1, 3, 9, 43, 129, 197, 239, 387, 591, 717, 1773, 2151, 8471, 10277, 25413, 30831, 47083, 76239, 92493, 141249, 423747, 2024569, 6073707, 18221121]

約数ペア:

[(1, 18221121), (3, 6073707), (9, 2024569), (43, 423747), (129, 141249), (197, 92493), (239, 76239), (387, 47083), (591, 30831), (717, 25413), (1773, 10277), (2151, 8471)]