21808242

素因数分解:

$2^1\times 3^2\times {\mathrm{157}}^1\times {\mathrm{7717}}^1$

素因数の和:7882

約数の個数: 24

約数和(自身を含む): 47558316

約数和(自身を除く): 25750074

約数列:

[1, 2, 3, 6, 9, 18, 157, 314, 471, 942, 1413, 2826, 7717, 15434, 23151, 46302, 69453, 138906, 1211569, 2423138, 3634707, 7269414, 10904121, 21808242]

約数ペア:

[(1, 21808242), (2, 10904121), (3, 7269414), (6, 3634707), (9, 2423138), (18, 1211569), (157, 138906), (314, 69453), (471, 46302), (942, 23151), (1413, 15434), (2826, 7717)]