20161089

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{809}}^1$

素因数の和:902

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 12498111

約数列:

[1, 3, 9, 13, 27, 39, 71, 117, 213, 351, 639, 809, 923, 1917, 2427, 2769, 7281, 8307, 10517, 21843, 24921, 31551, 57439, 94653, 172317, 283959, 516951, 746707, 1550853, 2240121, 6720363, 20161089]

約数ペア:

[(1, 20161089), (3, 6720363), (9, 2240121), (13, 1550853), (27, 746707), (39, 516951), (71, 283959), (117, 172317), (213, 94653), (351, 57439), (639, 31551), (809, 24921), (923, 21843), (1917, 10517), (2427, 8307), (2769, 7281)]