18666879

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{80809}}^1$

素因数の和:80830

約数の個数: 16

約数和(自身を含む): 31031040

約数和(自身を除く): 12364161

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 80809, 242427, 565663, 888899, 1696989, 2666697, 6222293, 18666879]

約数ペア:

[(1, 18666879), (3, 6222293), (7, 2666697), (11, 1696989), (21, 888899), (33, 565663), (77, 242427), (231, 80809)]