8990820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{251}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 27518400

約数和(自身を除く): 18527580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 199, 251, 398, 502, 597, 753, 796, 995, 1004, 1194, 1255, 1506, 1791, 1990, 2259, 2388, 2510, 2985, 3012, 3582, 3765, 3980, 4518, 5020, 5970, 7164, 7530, 8955, 9036, 11295, 11940, 15060, 17910, 22590, 35820, 45180, 49949, 99898, 149847, 199796, 249745, 299694, 449541, 499490, 599388, 749235, 899082, 998980, 1498470, 1798164, 2247705, 2996940, 4495410, 8990820]

約数ペア:

[(1, 8990820), (2, 4495410), (3, 2996940), (4, 2247705), (5, 1798164), (6, 1498470), (9, 998980), (10, 899082), (12, 749235), (15, 599388), (18, 499490), (20, 449541), (30, 299694), (36, 249745), (45, 199796), (60, 149847), (90, 99898), (180, 49949), (199, 45180), (251, 35820), (398, 22590), (502, 17910), (597, 15060), (753, 11940), (796, 11295), (995, 9036), (1004, 8955), (1194, 7530), (1255, 7164), (1506, 5970), (1791, 5020), (1990, 4518), (2259, 3980), (2388, 3765), (2510, 3582), (2985, 3012)]