25771221

素因数分解:

$3^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{3221}}^1$

素因数の和:3361

約数の個数: 24

約数和(自身を含む): 42891264

約数和(自身を除く): 17120043

約数列:

[1, 3, 7, 9, 21, 63, 127, 381, 889, 1143, 2667, 3221, 8001, 9663, 22547, 28989, 67641, 202923, 409067, 1227201, 2863469, 3681603, 8590407, 25771221]

約数ペア:

[(1, 25771221), (3, 8590407), (7, 3681603), (9, 2863469), (21, 1227201), (63, 409067), (127, 202923), (381, 67641), (889, 28989), (1143, 22547), (2667, 9663), (3221, 8001)]