20521137

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{75169}}^1$

素因数の和:75192

約数の個数: 16

約数和(自身を含む): 33676160

約数和(自身を除く): 13155023

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 75169, 225507, 526183, 977197, 1578549, 2931591, 6840379, 20521137]

約数ペア:

[(1, 20521137), (3, 6840379), (7, 2931591), (13, 1578549), (21, 977197), (39, 526183), (91, 225507), (273, 75169)]