3987945

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{401}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 7901712

約数和(自身を除く): 3913767

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 195, 221, 255, 401, 585, 663, 765, 1105, 1203, 1989, 2005, 3315, 3609, 5213, 6015, 6817, 9945, 15639, 18045, 20451, 26065, 34085, 46917, 61353, 78195, 88621, 102255, 234585, 265863, 306765, 443105, 797589, 1329315, 3987945]

約数ペア:

[(1, 3987945), (3, 1329315), (5, 797589), (9, 443105), (13, 306765), (15, 265863), (17, 234585), (39, 102255), (45, 88621), (51, 78195), (65, 61353), (85, 46917), (117, 34085), (153, 26065), (195, 20451), (221, 18045), (255, 15639), (401, 9945), (585, 6817), (663, 6015), (765, 5213), (1105, 3609), (1203, 3315), (1989, 2005)]