21508551

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{41927}}^1$

素因数の和:41955

約数の個数: 16

約数和(自身を含む): 33542400

約数和(自身を除く): 12033849

約数列:

[1, 3, 9, 19, 27, 57, 171, 513, 41927, 125781, 377343, 796613, 1132029, 2389839, 7169517, 21508551]

約数ペア:

[(1, 21508551), (3, 7169517), (9, 2389839), (19, 1132029), (27, 796613), (57, 377343), (171, 125781), (513, 41927)]