20688724

素因数分解:

$2^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{4271}}^1$

素因数の和:4455

約数の個数: 24

約数和(自身を含む): 41626368

約数和(自身を除く): 20937644

約数列:

[1, 2, 4, 7, 14, 28, 173, 346, 692, 1211, 2422, 4271, 4844, 8542, 17084, 29897, 59794, 119588, 738883, 1477766, 2955532, 5172181, 10344362, 20688724]

約数ペア:

[(1, 20688724), (2, 10344362), (4, 5172181), (7, 2955532), (14, 1477766), (28, 738883), (173, 119588), (346, 59794), (692, 29897), (1211, 17084), (2422, 8542), (4271, 4844)]