12981339

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5569}}^1$

素因数の和:5619

約数の個数: 24

約数和(自身を含む): 22012640

約数和(自身を除く): 9031301

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 5569, 16707, 38983, 50121, 116949, 206053, 350847, 618159, 1442371, 1854477, 4327113, 12981339]

約数ペア:

[(1, 12981339), (3, 4327113), (7, 1854477), (9, 1442371), (21, 618159), (37, 350847), (63, 206053), (111, 116949), (259, 50121), (333, 38983), (777, 16707), (2331, 5569)]