21186321

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{5077}}^1$

素因数の和:5200

約数の個数: 16

約数和(自身を含む): 30711744

約数和(自身を除く): 9525423

約数列:

[1, 3, 13, 39, 107, 321, 1391, 4173, 5077, 15231, 66001, 198003, 543239, 1629717, 7062107, 21186321]

約数ペア:

[(1, 21186321), (3, 7062107), (13, 1629717), (39, 543239), (107, 198003), (321, 66001), (1391, 15231), (4173, 5077)]