20121479055

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{515737}}^1$

素因数の和:515785

約数の個数: 48

約数和(自身を含む): 37999575840

約数和(自身を除く): 17878096785

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 289, 459, 765, 867, 1445, 2295, 2601, 4335, 7803, 13005, 39015, 515737, 1547211, 2578685, 4641633, 7736055, 8767529, 13924899, 23208165, 26302587, 43837645, 69624495, 78907761, 131512935, 149047993, 236723283, 394538805, 447143979, 745239965, 1183616415, 1341431937, 2235719895, 4024295811, 6707159685, 20121479055]

約数ペア:

[(1, 20121479055), (3, 6707159685), (5, 4024295811), (9, 2235719895), (15, 1341431937), (17, 1183616415), (27, 745239965), (45, 447143979), (51, 394538805), (85, 236723283), (135, 149047993), (153, 131512935), (255, 78907761), (289, 69624495), (459, 43837645), (765, 26302587), (867, 23208165), (1445, 13924899), (2295, 8767529), (2601, 7736055), (4335, 4641633), (7803, 2578685), (13005, 1547211), (39015, 515737)]