21597759

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{11593}}^1$

素因数の和:11628

約数の個数: 20

約数和(自身を含む): 33668976

約数和(自身を除く): 12071217

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 11593, 34779, 104337, 266639, 313011, 799917, 939033, 2399751, 7199253, 21597759]

約数ペア:

[(1, 21597759), (3, 7199253), (9, 2399751), (23, 939033), (27, 799917), (69, 313011), (81, 266639), (207, 104337), (621, 34779), (1863, 11593)]