18123287

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1237}}^1$

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 23710176

約数和(自身を除く): 5586889

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1127, 1237, 2093, 8659, 14651, 16081, 28451, 60613, 112567, 199157, 369863, 787969, 1394099, 2589041, 18123287]

約数ペア:

[(1, 18123287), (7, 2589041), (13, 1394099), (23, 787969), (49, 369863), (91, 199157), (161, 112567), (299, 60613), (637, 28451), (1127, 16081), (1237, 14651), (2093, 8659)]