20724471

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4889}}^1$

素因数の和:5055

約数の個数: 16

約数和(自身を含む): 30904800

約数和(自身を除く): 10180329

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4889, 14667, 44001, 132003, 767573, 2302719, 6908157, 20724471]

約数ペア:

[(1, 20724471), (3, 6908157), (9, 2302719), (27, 767573), (157, 132003), (471, 44001), (1413, 14667), (4239, 4889)]