20399247

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5569}}^1$

素因数の和:5623

約数の個数: 24

約数和(自身を含む): 33018960

約数和(自身を除く): 12619713

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 1221, 3663, 5569, 16707, 50121, 61259, 183777, 206053, 551331, 618159, 1854477, 2266583, 6799749, 20399247]

約数ペア:

[(1, 20399247), (3, 6799749), (9, 2266583), (11, 1854477), (33, 618159), (37, 551331), (99, 206053), (111, 183777), (333, 61259), (407, 50121), (1221, 16707), (3663, 5569)]