20564397

素因数分解:

$3^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{1709}}^1$

素因数の和:1913

約数の個数: 24

約数和(自身を含む): 34145280

約数和(自身を除く): 13580883

約数列:

[1, 3, 7, 9, 21, 63, 191, 573, 1337, 1709, 1719, 4011, 5127, 11963, 12033, 15381, 35889, 107667, 326419, 979257, 2284933, 2937771, 6854799, 20564397]

約数ペア:

[(1, 20564397), (3, 6854799), (7, 2937771), (9, 2284933), (21, 979257), (63, 326419), (191, 107667), (573, 35889), (1337, 15381), (1709, 12033), (1719, 11963), (4011, 5127)]