21590541

素因数分解:

$3^2\times 7^1\times {\mathrm{83}}^1\times {\mathrm{4129}}^1$

素因数の和:4225

約数の個数: 24

約数和(自身を含む): 36079680

約数和(自身を除く): 14489139

約数列:

[1, 3, 7, 9, 21, 63, 83, 249, 581, 747, 1743, 4129, 5229, 12387, 28903, 37161, 86709, 260127, 342707, 1028121, 2398949, 3084363, 7196847, 21590541]

約数ペア:

[(1, 21590541), (3, 7196847), (7, 3084363), (9, 2398949), (21, 1028121), (63, 342707), (83, 260127), (249, 86709), (581, 37161), (747, 28903), (1743, 12387), (4129, 5229)]