12781917

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:401

約数の個数: 24

約数和(自身を含む): 19027008

約数和(自身を除く): 6245091

約数列:

[1, 3, 9, 71, 83, 213, 241, 249, 639, 723, 747, 2169, 5893, 17111, 17679, 20003, 51333, 53037, 60009, 153999, 180027, 1420213, 4260639, 12781917]

約数ペア:

[(1, 12781917), (3, 4260639), (9, 1420213), (71, 180027), (83, 153999), (213, 60009), (241, 53037), (249, 51333), (639, 20003), (723, 17679), (747, 17111), (2169, 5893)]