19861984

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1259}}^1$

素因数の和:1315

約数の個数: 48

約数和(自身を含む): 42865200

約数和(自身を除く): 23003216

約数列:

[1, 2, 4, 8, 16, 17, 29, 32, 34, 58, 68, 116, 136, 232, 272, 464, 493, 544, 928, 986, 1259, 1972, 2518, 3944, 5036, 7888, 10072, 15776, 20144, 21403, 36511, 40288, 42806, 73022, 85612, 146044, 171224, 292088, 342448, 584176, 620687, 684896, 1168352, 1241374, 2482748, 4965496, 9930992, 19861984]

約数ペア:

[(1, 19861984), (2, 9930992), (4, 4965496), (8, 2482748), (16, 1241374), (17, 1168352), (29, 684896), (32, 620687), (34, 584176), (58, 342448), (68, 292088), (116, 171224), (136, 146044), (232, 85612), (272, 73022), (464, 42806), (493, 40288), (544, 36511), (928, 21403), (986, 20144), (1259, 15776), (1972, 10072), (2518, 7888), (3944, 5036)]