28256211

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1109}}^1$

素因数の和:1283

約数の個数: 24

約数和(自身を含む): 43290000

約数和(自身を除く): 15033789

約数列:

[1, 3, 9, 19, 57, 149, 171, 447, 1109, 1341, 2831, 3327, 8493, 9981, 21071, 25479, 63213, 165241, 189639, 495723, 1487169, 3139579, 9418737, 28256211]

約数ペア:

[(1, 28256211), (3, 9418737), (9, 3139579), (19, 1487169), (57, 495723), (149, 189639), (171, 165241), (447, 63213), (1109, 25479), (1341, 21071), (2831, 9981), (3327, 8493)]