17661605

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:221

約数の個数: 32

約数和(自身を含む): 23950080

約数和(自身を除く): 6288475

約数列:

[1, 5, 13, 43, 65, 71, 89, 215, 355, 445, 559, 923, 1157, 2795, 3053, 3827, 4615, 5785, 6319, 15265, 19135, 31595, 39689, 49751, 82147, 198445, 248755, 271717, 410735, 1358585, 3532321, 17661605]

約数ペア:

[(1, 17661605), (5, 3532321), (13, 1358585), (43, 410735), (65, 271717), (71, 248755), (89, 198445), (215, 82147), (355, 49751), (445, 39689), (559, 31595), (923, 19135), (1157, 15265), (2795, 6319), (3053, 5785), (3827, 4615)]