19912797

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{14461}}^1$

素因数の和:14490

約数の個数: 20

約数和(自身を含む): 31498236

約数和(自身を除く): 11585439

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 14461, 43383, 130149, 245837, 390447, 737511, 1171341, 2212533, 6637599, 19912797]

約数ペア:

[(1, 19912797), (3, 6637599), (9, 2212533), (17, 1171341), (27, 737511), (51, 390447), (81, 245837), (153, 130149), (459, 43383), (1377, 14461)]