20518905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3361}}^1$

素因数の和:3417

約数の個数: 32

約数和(自身を含む): 36793728

約数和(自身を除く): 16274823

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 165, 185, 407, 555, 1221, 2035, 3361, 6105, 10083, 16805, 36971, 50415, 110913, 124357, 184855, 373071, 554565, 621785, 1367927, 1865355, 4103781, 6839635, 20518905]

約数ペア:

[(1, 20518905), (3, 6839635), (5, 4103781), (11, 1865355), (15, 1367927), (33, 621785), (37, 554565), (55, 373071), (111, 184855), (165, 124357), (185, 110913), (407, 50415), (555, 36971), (1221, 16805), (2035, 10083), (3361, 6105)]