20217009

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{2957}}^1$

素因数の和:3056

約数の個数: 16

約数和(自身を含む): 28112832

約数和(自身を除く): 7895823

約数列:

[1, 3, 43, 53, 129, 159, 2279, 2957, 6837, 8871, 127151, 156721, 381453, 470163, 6739003, 20217009]

約数ペア:

[(1, 20217009), (3, 6739003), (43, 470163), (53, 381453), (129, 156721), (159, 127151), (2279, 8871), (2957, 6837)]