19985504

素因数分解:

$2^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{8111}}^1$

素因数の和:8139

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 29075872

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 56, 77, 88, 112, 154, 176, 224, 308, 352, 616, 1232, 2464, 8111, 16222, 32444, 56777, 64888, 89221, 113554, 129776, 178442, 227108, 259552, 356884, 454216, 624547, 713768, 908432, 1249094, 1427536, 1816864, 2498188, 2855072, 4996376, 9992752, 19985504]

約数ペア:

[(1, 19985504), (2, 9992752), (4, 4996376), (7, 2855072), (8, 2498188), (11, 1816864), (14, 1427536), (16, 1249094), (22, 908432), (28, 713768), (32, 624547), (44, 454216), (56, 356884), (77, 259552), (88, 227108), (112, 178442), (154, 129776), (176, 113554), (224, 89221), (308, 64888), (352, 56777), (616, 32444), (1232, 16222), (2464, 8111)]