20968821

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{18061}}^1$

素因数の和:18113

約数の個数: 16

約数和(自身を含む): 31789120

約数和(自身を除く): 10820299

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 18061, 54183, 162549, 487647, 776623, 2329869, 6989607, 20968821]

約数ペア:

[(1, 20968821), (3, 6989607), (9, 2329869), (27, 776623), (43, 487647), (129, 162549), (387, 54183), (1161, 18061)]