20520640

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9161}}^1$

素因数の和:9185

約数の個数: 56

約数和(自身を含む): 55851552

約数和(自身を除く): 35330912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9161, 18322, 36644, 45805, 64127, 73288, 91610, 128254, 146576, 183220, 256508, 293152, 320635, 366440, 513016, 586304, 641270, 732880, 1026032, 1282540, 1465760, 2052064, 2565080, 2931520, 4104128, 5130160, 10260320, 20520640]

約数ペア:

[(1, 20520640), (2, 10260320), (4, 5130160), (5, 4104128), (7, 2931520), (8, 2565080), (10, 2052064), (14, 1465760), (16, 1282540), (20, 1026032), (28, 732880), (32, 641270), (35, 586304), (40, 513016), (56, 366440), (64, 320635), (70, 293152), (80, 256508), (112, 183220), (140, 146576), (160, 128254), (224, 91610), (280, 73288), (320, 64127), (448, 45805), (560, 36644), (1120, 18322), (2240, 9161)]