20862945

素因数分解:

$3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2953}}^1$

素因数の和:3121

約数の個数: 24

約数和(自身を含む): 36405096

約数和(自身を除く): 15542151

約数列:

[1, 3, 5, 9, 15, 45, 157, 471, 785, 1413, 2355, 2953, 7065, 8859, 14765, 26577, 44295, 132885, 463621, 1390863, 2318105, 4172589, 6954315, 20862945]

約数ペア:

[(1, 20862945), (3, 6954315), (5, 4172589), (9, 2318105), (15, 1390863), (45, 463621), (157, 132885), (471, 44295), (785, 26577), (1413, 14765), (2355, 8859), (2953, 7065)]