20437505

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:158

約数の個数: 32

約数和(自身を含む): 28038528

約数和(自身を除く): 7601023

約数列:

[1, 5, 11, 37, 55, 83, 121, 185, 407, 415, 605, 913, 1331, 2035, 3071, 4477, 4565, 6655, 10043, 15355, 22385, 33781, 49247, 50215, 110473, 168905, 246235, 371591, 552365, 1857955, 4087501, 20437505]

約数ペア:

[(1, 20437505), (5, 4087501), (11, 1857955), (37, 552365), (55, 371591), (83, 246235), (121, 168905), (185, 110473), (407, 50215), (415, 49247), (605, 33781), (913, 22385), (1331, 15355), (2035, 10043), (3071, 6655), (4477, 4565)]