20789523

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{419}}^1$

素因数の和:611

約数の個数: 24

約数和(自身を含む): 31122000

約数和(自身を除く): 10332477

約数列:

[1, 3, 9, 37, 111, 149, 333, 419, 447, 1257, 1341, 3771, 5513, 15503, 16539, 46509, 49617, 62431, 139527, 187293, 561879, 2309947, 6929841, 20789523]

約数ペア:

[(1, 20789523), (3, 6929841), (9, 2309947), (37, 561879), (111, 187293), (149, 139527), (333, 62431), (419, 49617), (447, 46509), (1257, 16539), (1341, 15503), (3771, 5513)]