21201807

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{9049}}^1$

素因数の和:9134

約数の個数: 16

約数和(自身を含む): 31276800

約数和(自身を除く): 10074993

約数列:

[1, 3, 11, 33, 71, 213, 781, 2343, 9049, 27147, 99539, 298617, 642479, 1927437, 7067269, 21201807]

約数ペア:

[(1, 21201807), (3, 7067269), (11, 1927437), (33, 642479), (71, 298617), (213, 99539), (781, 27147), (2343, 9049)]