21974997

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 33094656

約数和(自身を除く): 11119659

約数列:

[1, 3, 11, 33, 71, 83, 113, 213, 249, 339, 781, 913, 1243, 2343, 2739, 3729, 5893, 8023, 9379, 17679, 24069, 28137, 64823, 88253, 103169, 194469, 264759, 309507, 665909, 1997727, 7324999, 21974997]

約数ペア:

[(1, 21974997), (3, 7324999), (11, 1997727), (33, 665909), (71, 309507), (83, 264759), (113, 194469), (213, 103169), (249, 88253), (339, 64823), (781, 28137), (913, 24069), (1243, 17679), (2343, 9379), (2739, 8023), (3729, 5893)]