28806759

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{5009}}^1$

素因数の和:5092

約数の個数: 20

約数和(自身を含む): 43647120

約数和(自身を除く): 14840361

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5009, 5751, 15027, 45081, 135243, 355639, 405729, 1066917, 3200751, 9602253, 28806759]

約数ペア:

[(1, 28806759), (3, 9602253), (9, 3200751), (27, 1066917), (71, 405729), (81, 355639), (213, 135243), (639, 45081), (1917, 15027), (5009, 5751)]