20916081

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{251}}^1$

素因数の和:501

約数の個数: 24

約数和(自身を含む): 31135104

約数和(自身を除く): 10219023

約数列:

[1, 3, 9, 47, 141, 197, 251, 423, 591, 753, 1773, 2259, 9259, 11797, 27777, 35391, 49447, 83331, 106173, 148341, 445023, 2324009, 6972027, 20916081]

約数ペア:

[(1, 20916081), (3, 6972027), (9, 2324009), (47, 445023), (141, 148341), (197, 106173), (251, 83331), (423, 49447), (591, 35391), (753, 27777), (1773, 11797), (2259, 9259)]