21294933

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{349}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 31802400

約数和(自身を除く): 10507467

約数列:

[1, 3, 11, 33, 43, 129, 349, 473, 1047, 1419, 1849, 3839, 5547, 11517, 15007, 20339, 45021, 61017, 165077, 495231, 645301, 1935903, 7098311, 21294933]

約数ペア:

[(1, 21294933), (3, 7098311), (11, 1935903), (33, 645301), (43, 495231), (129, 165077), (349, 61017), (473, 45021), (1047, 20339), (1419, 15007), (1849, 11517), (3839, 5547)]