20408193

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19381}}^1$

素因数の和:19406

約数の個数: 20

約数和(自身を含む): 32833108

約数和(自身を除く): 12424915

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19381, 58143, 174429, 251953, 523287, 755859, 1569861, 2267577, 6802731, 20408193]

約数ペア:

[(1, 20408193), (3, 6802731), (9, 2267577), (13, 1569861), (27, 755859), (39, 523287), (81, 251953), (117, 174429), (351, 58143), (1053, 19381)]