21684429

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20593}}^1$

素因数の和:20618

約数の個数: 20

約数和(自身を含む): 34886236

約数和(自身を除く): 13201807

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20593, 61779, 185337, 267709, 556011, 803127, 1668033, 2409381, 7228143, 21684429]

約数ペア:

[(1, 21684429), (3, 7228143), (9, 2409381), (13, 1668033), (27, 803127), (39, 556011), (81, 267709), (117, 185337), (351, 61779), (1053, 20593)]