20554155

素因数分解:

$3^6\times 5^1\times {\mathrm{5639}}^1$

素因数の和:5662

約数の個数: 28

約数和(自身を含む): 36987120

約数和(自身を除く): 16432965

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 3645, 5639, 16917, 28195, 50751, 84585, 152253, 253755, 456759, 761265, 1370277, 2283795, 4110831, 6851385, 20554155]

約数ペア:

[(1, 20554155), (3, 6851385), (5, 4110831), (9, 2283795), (15, 1370277), (27, 761265), (45, 456759), (81, 253755), (135, 152253), (243, 84585), (405, 50751), (729, 28195), (1215, 16917), (3645, 5639)]