20872017

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{1709}}^1$

素因数の和:1797

約数の個数: 24

約数和(自身を含む): 32011200

約数和(自身を除く): 11139183

約数列:

[1, 3, 9, 23, 59, 69, 177, 207, 531, 1357, 1709, 4071, 5127, 12213, 15381, 39307, 100831, 117921, 302493, 353763, 907479, 2319113, 6957339, 20872017]

約数ペア:

[(1, 20872017), (3, 6957339), (9, 2319113), (23, 907479), (59, 353763), (69, 302493), (177, 117921), (207, 100831), (531, 39307), (1357, 15381), (1709, 12213), (4071, 5127)]