17993885

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:653

約数の個数: 32

約数和(自身を含む): 26998272

約数和(自身を除く): 9004387

約数列:

[1, 5, 7, 13, 35, 65, 71, 91, 355, 455, 497, 557, 923, 2485, 2785, 3899, 4615, 6461, 7241, 19495, 32305, 36205, 39547, 50687, 197735, 253435, 276829, 514111, 1384145, 2570555, 3598777, 17993885]

約数ペア:

[(1, 17993885), (5, 3598777), (7, 2570555), (13, 1384145), (35, 514111), (65, 276829), (71, 253435), (91, 197735), (355, 50687), (455, 39547), (497, 36205), (557, 32305), (923, 19495), (2485, 7241), (2785, 6461), (3899, 4615)]