18986157

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{5717}}^1$

素因数の和:5770

約数の個数: 20

約数和(自身を含む): 29058876

約数和(自身を除く): 10072719

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 5717, 17151, 51453, 154359, 234397, 463077, 703191, 2109573, 6328719, 18986157]

約数ペア:

[(1, 18986157), (3, 6328719), (9, 2109573), (27, 703191), (41, 463077), (81, 234397), (123, 154359), (369, 51453), (1107, 17151), (3321, 5717)]