21647763

素因数分解:

$3^3\times {\mathrm{149}}^1\times {\mathrm{5381}}^1$

素因数の和:5539

約数の個数: 16

約数和(自身を含む): 32292000

約数和(自身を除く): 10644237

約数列:

[1, 3, 9, 27, 149, 447, 1341, 4023, 5381, 16143, 48429, 145287, 801769, 2405307, 7215921, 21647763]

約数ペア:

[(1, 21647763), (3, 7215921), (9, 2405307), (27, 801769), (149, 145287), (447, 48429), (1341, 16143), (4023, 5381)]