19991118

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{97}}^1\times {\mathrm{701}}^1$

素因数の和:817

約数の個数: 48

約数和(自身を含む): 47056464

約数和(自身を除く): 27065346

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 97, 98, 147, 194, 291, 294, 582, 679, 701, 1358, 1402, 2037, 2103, 4074, 4206, 4753, 4907, 9506, 9814, 14259, 14721, 28518, 29442, 34349, 67997, 68698, 103047, 135994, 203991, 206094, 407982, 475979, 951958, 1427937, 2855874, 3331853, 6663706, 9995559, 19991118]

約数ペア:

[(1, 19991118), (2, 9995559), (3, 6663706), (6, 3331853), (7, 2855874), (14, 1427937), (21, 951958), (42, 475979), (49, 407982), (97, 206094), (98, 203991), (147, 135994), (194, 103047), (291, 68698), (294, 67997), (582, 34349), (679, 29442), (701, 28518), (1358, 14721), (1402, 14259), (2037, 9814), (2103, 9506), (4074, 4907), (4206, 4753)]