78642171

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{33479}}^1$

素因数の和:33520

約数の個数: 20

約数和(自身を含む): 121532400

約数和(自身を除く): 42890229

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 33479, 100437, 301311, 903933, 970891, 2711799, 2912673, 8738019, 26214057, 78642171]

約数ペア:

[(1, 78642171), (3, 26214057), (9, 8738019), (27, 2912673), (29, 2711799), (81, 970891), (87, 903933), (261, 301311), (783, 100437), (2349, 33479)]