19154313

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{2657}}^1$

素因数の和:2758

約数の個数: 20

約数和(自身を含む): 28945620

約数和(自身を除く): 9791307

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 2657, 7209, 7971, 23913, 71739, 215217, 236473, 709419, 2128257, 6384771, 19154313]

約数ペア:

[(1, 19154313), (3, 6384771), (9, 2128257), (27, 709419), (81, 236473), (89, 215217), (267, 71739), (801, 23913), (2403, 7971), (2657, 7209)]