20006440

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{9437}}^1$

素因数の和:9501

約数の個数: 32

約数和(自身を含む): 45868680

約数和(自身を除く): 25862240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 9437, 18874, 37748, 47185, 75496, 94370, 188740, 377480, 500161, 1000322, 2000644, 2500805, 4001288, 5001610, 10003220, 20006440]

約数ペア:

[(1, 20006440), (2, 10003220), (4, 5001610), (5, 4001288), (8, 2500805), (10, 2000644), (20, 1000322), (40, 500161), (53, 377480), (106, 188740), (212, 94370), (265, 75496), (424, 47185), (530, 37748), (1060, 18874), (2120, 9437)]