18927535

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:255

約数の個数: 32

約数和(自身を含む): 26002944

約数和(自身を除く): 7075409

約数列:

[1, 5, 11, 37, 55, 71, 131, 185, 355, 407, 655, 781, 1441, 2035, 2627, 3905, 4847, 7205, 9301, 13135, 24235, 28897, 46505, 53317, 102311, 144485, 266585, 344137, 511555, 1720685, 3785507, 18927535]

約数ペア:

[(1, 18927535), (5, 3785507), (11, 1720685), (37, 511555), (55, 344137), (71, 266585), (131, 144485), (185, 102311), (355, 53317), (407, 46505), (655, 28897), (781, 24235), (1441, 13135), (2035, 9301), (2627, 7205), (3905, 4847)]