21505797

素因数分解:

$3^3\times {\mathrm{193}}^1\times {\mathrm{4127}}^1$

素因数の和:4329

約数の個数: 16

約数和(自身を含む): 32033280

約数和(自身を除く): 10527483

約数列:

[1, 3, 9, 27, 193, 579, 1737, 4127, 5211, 12381, 37143, 111429, 796511, 2389533, 7168599, 21505797]

約数ペア:

[(1, 21505797), (3, 7168599), (9, 2389533), (27, 796511), (193, 111429), (579, 37143), (1737, 12381), (4127, 5211)]