20508291

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{269}}^1$

素因数の和:515

約数の個数: 24

約数和(自身を含む): 30579120

約数和(自身を除く): 10070829

約数列:

[1, 3, 9, 43, 129, 197, 269, 387, 591, 807, 1773, 2421, 8471, 11567, 25413, 34701, 52993, 76239, 104103, 158979, 476937, 2278699, 6836097, 20508291]

約数ペア:

[(1, 20508291), (3, 6836097), (9, 2278699), (43, 476937), (129, 158979), (197, 104103), (269, 76239), (387, 52993), (591, 34701), (807, 25413), (1773, 11567), (2421, 8471)]