19977440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17837}}^1$

素因数の和:17859

約数の個数: 48

約数和(自身を含む): 53942112

約数和(自身を除く): 33964672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 17837, 35674, 71348, 89185, 124859, 142696, 178370, 249718, 285392, 356740, 499436, 570784, 624295, 713480, 998872, 1248590, 1426960, 1997744, 2497180, 2853920, 3995488, 4994360, 9988720, 19977440]

約数ペア:

[(1, 19977440), (2, 9988720), (4, 4994360), (5, 3995488), (7, 2853920), (8, 2497180), (10, 1997744), (14, 1426960), (16, 1248590), (20, 998872), (28, 713480), (32, 624295), (35, 570784), (40, 499436), (56, 356740), (70, 285392), (80, 249718), (112, 178370), (140, 142696), (160, 124859), (224, 89185), (280, 71348), (560, 35674), (1120, 17837)]