19821368

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 44452800

約数和(自身を除く): 24631432

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 89, 97, 164, 178, 194, 287, 328, 356, 388, 574, 623, 679, 712, 776, 1148, 1246, 1358, 2296, 2492, 2716, 3649, 3977, 4984, 5432, 7298, 7954, 8633, 14596, 15908, 17266, 25543, 27839, 29192, 31816, 34532, 51086, 55678, 60431, 69064, 102172, 111356, 120862, 204344, 222712, 241724, 353953, 483448, 707906, 1415812, 2477671, 2831624, 4955342, 9910684, 19821368]

約数ペア:

[(1, 19821368), (2, 9910684), (4, 4955342), (7, 2831624), (8, 2477671), (14, 1415812), (28, 707906), (41, 483448), (56, 353953), (82, 241724), (89, 222712), (97, 204344), (164, 120862), (178, 111356), (194, 102172), (287, 69064), (328, 60431), (356, 55678), (388, 51086), (574, 34532), (623, 31816), (679, 29192), (712, 27839), (776, 25543), (1148, 17266), (1246, 15908), (1358, 14596), (2296, 8633), (2492, 7954), (2716, 7298), (3649, 5432), (3977, 4984)]