20271447

素因数分解:

$3^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{1069}}^1$

素因数の和:1132

約数の個数: 36

約数和(自身を含む): 34886280

約数和(自身を除く): 14614833

約数列:

[1, 3, 7, 9, 21, 43, 49, 63, 129, 147, 301, 387, 441, 903, 1069, 2107, 2709, 3207, 6321, 7483, 9621, 18963, 22449, 45967, 52381, 67347, 137901, 157143, 321769, 413703, 471429, 965307, 2252383, 2895921, 6757149, 20271447]

約数ペア:

[(1, 20271447), (3, 6757149), (7, 2895921), (9, 2252383), (21, 965307), (43, 471429), (49, 413703), (63, 321769), (129, 157143), (147, 137901), (301, 67347), (387, 52381), (441, 45967), (903, 22449), (1069, 18963), (2107, 9621), (2709, 7483), (3207, 6321)]