280144960

素因数分解:

$2^6\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1783}}^1$

素因数の和:2291

約数の個数: 56

約数和(自身を含む): 668828736

約数和(自身を除く): 388683776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 491, 982, 1783, 1964, 2455, 3566, 3928, 4910, 7132, 7856, 8915, 9820, 14264, 15712, 17830, 19640, 28528, 31424, 35660, 39280, 57056, 71320, 78560, 114112, 142640, 157120, 285280, 570560, 875453, 1750906, 3501812, 4377265, 7003624, 8754530, 14007248, 17509060, 28014496, 35018120, 56028992, 70036240, 140072480, 280144960]

約数ペア:

[(1, 280144960), (2, 140072480), (4, 70036240), (5, 56028992), (8, 35018120), (10, 28014496), (16, 17509060), (20, 14007248), (32, 8754530), (40, 7003624), (64, 4377265), (80, 3501812), (160, 1750906), (320, 875453), (491, 570560), (982, 285280), (1783, 157120), (1964, 142640), (2455, 114112), (3566, 78560), (3928, 71320), (4910, 57056), (7132, 39280), (7856, 35660), (8915, 31424), (9820, 28528), (14264, 19640), (15712, 17830)]