20309841

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{1627}}^1$

素因数の和:1725

約数の個数: 24

約数和(自身を含む): 31322720

約数和(自身を除く): 11012879

約数列:

[1, 3, 9, 19, 57, 73, 171, 219, 657, 1387, 1627, 4161, 4881, 12483, 14643, 30913, 92739, 118771, 278217, 356313, 1068939, 2256649, 6769947, 20309841]

約数ペア:

[(1, 20309841), (3, 6769947), (9, 2256649), (19, 1068939), (57, 356313), (73, 278217), (171, 118771), (219, 92739), (657, 30913), (1387, 14643), (1627, 12483), (4161, 4881)]