19782369

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{227}}^1\times {\mathrm{421}}^1$

素因数の和:677

約数の個数: 24

約数和(自身を含む): 30019392

約数和(自身を除く): 10237023

約数列:

[1, 3, 9, 23, 69, 207, 227, 421, 681, 1263, 2043, 3789, 5221, 9683, 15663, 29049, 46989, 87147, 95567, 286701, 860103, 2198041, 6594123, 19782369]

約数ペア:

[(1, 19782369), (3, 6594123), (9, 2198041), (23, 860103), (69, 286701), (207, 95567), (227, 87147), (421, 46989), (681, 29049), (1263, 15663), (2043, 9683), (3789, 5221)]