25561917

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:553

約数の個数: 24

約数和(自身を含む): 37889280

約数和(自身を除く): 12327363

約数列:

[1, 3, 9, 71, 109, 213, 327, 367, 639, 981, 1101, 3303, 7739, 23217, 26057, 40003, 69651, 78171, 120009, 234513, 360027, 2840213, 8520639, 25561917]

約数ペア:

[(1, 25561917), (3, 8520639), (9, 2840213), (71, 360027), (109, 234513), (213, 120009), (327, 78171), (367, 69651), (639, 40003), (981, 26057), (1101, 23217), (3303, 7739)]