20012319

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{4721}}^1$

素因数の和:4887

約数の個数: 16

約数和(自身を含む): 29843040

約数和(自身を除く): 9830721

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 4721, 14163, 42489, 127467, 741197, 2223591, 6670773, 20012319]

約数ペア:

[(1, 20012319), (3, 6670773), (9, 2223591), (27, 741197), (157, 127467), (471, 42489), (1413, 14163), (4239, 4721)]