128640820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{811}}^1$

素因数の和:941

約数の個数: 96

約数和(自身を含む): 340494336

約数和(自身を除く): 211853516

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 103, 110, 140, 154, 206, 220, 308, 385, 412, 515, 721, 770, 811, 1030, 1133, 1442, 1540, 1622, 2060, 2266, 2884, 3244, 3605, 4055, 4532, 5665, 5677, 7210, 7931, 8110, 8921, 11330, 11354, 14420, 15862, 16220, 17842, 22660, 22708, 28385, 31724, 35684, 39655, 44605, 56770, 62447, 79310, 83533, 89210, 113540, 124894, 158620, 167066, 178420, 249788, 312235, 334132, 417665, 584731, 624470, 835330, 918863, 1169462, 1248940, 1670660, 1837726, 2338924, 2923655, 3675452, 4594315, 5847310, 6432041, 9188630, 11694620, 12864082, 18377260, 25728164, 32160205, 64320410, 128640820]

約数ペア:

[(1, 128640820), (2, 64320410), (4, 32160205), (5, 25728164), (7, 18377260), (10, 12864082), (11, 11694620), (14, 9188630), (20, 6432041), (22, 5847310), (28, 4594315), (35, 3675452), (44, 2923655), (55, 2338924), (70, 1837726), (77, 1670660), (103, 1248940), (110, 1169462), (140, 918863), (154, 835330), (206, 624470), (220, 584731), (308, 417665), (385, 334132), (412, 312235), (515, 249788), (721, 178420), (770, 167066), (811, 158620), (1030, 124894), (1133, 113540), (1442, 89210), (1540, 83533), (1622, 79310), (2060, 62447), (2266, 56770), (2884, 44605), (3244, 39655), (3605, 35684), (4055, 31724), (4532, 28385), (5665, 22708), (5677, 22660), (7210, 17842), (7931, 16220), (8110, 15862), (8921, 14420), (11330, 11354)]