20717954

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{487}}^1$

素因数の和:817

約数の個数: 16

約数和(自身を含む): 31622400

約数和(自身を除く): 10904446

約数列:

[1, 2, 89, 178, 239, 478, 487, 974, 21271, 42542, 43343, 86686, 116393, 232786, 10358977, 20717954]

約数ペア:

[(1, 20717954), (2, 10358977), (89, 232786), (178, 116393), (239, 86686), (478, 43343), (487, 42542), (974, 21271)]