289803920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{517507}}^1$

素因数の和:517527

約数の個数: 40

約数和(自身を含む): 770051904

約数和(自身を除く): 480247984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 517507, 1035014, 2070028, 2587535, 3622549, 4140056, 5175070, 7245098, 8280112, 10350140, 14490196, 18112745, 20700280, 28980392, 36225490, 41400560, 57960784, 72450980, 144901960, 289803920]

約数ペア:

[(1, 289803920), (2, 144901960), (4, 72450980), (5, 57960784), (7, 41400560), (8, 36225490), (10, 28980392), (14, 20700280), (16, 18112745), (20, 14490196), (28, 10350140), (35, 8280112), (40, 7245098), (56, 5175070), (70, 4140056), (80, 3622549), (112, 2587535), (140, 2070028), (280, 1035014), (560, 517507)]