19988976

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1451}}^1$

素因数の和:1510

約数の個数: 80

約数和(自身を含む): 60496128

約数和(自身を除く): 40507152

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 41, 42, 48, 56, 82, 84, 112, 123, 164, 168, 246, 287, 328, 336, 492, 574, 656, 861, 984, 1148, 1451, 1722, 1968, 2296, 2902, 3444, 4353, 4592, 5804, 6888, 8706, 10157, 11608, 13776, 17412, 20314, 23216, 30471, 34824, 40628, 59491, 60942, 69648, 81256, 118982, 121884, 162512, 178473, 237964, 243768, 356946, 416437, 475928, 487536, 713892, 832874, 951856, 1249311, 1427784, 1665748, 2498622, 2855568, 3331496, 4997244, 6662992, 9994488, 19988976]

約数ペア:

[(1, 19988976), (2, 9994488), (3, 6662992), (4, 4997244), (6, 3331496), (7, 2855568), (8, 2498622), (12, 1665748), (14, 1427784), (16, 1249311), (21, 951856), (24, 832874), (28, 713892), (41, 487536), (42, 475928), (48, 416437), (56, 356946), (82, 243768), (84, 237964), (112, 178473), (123, 162512), (164, 121884), (168, 118982), (246, 81256), (287, 69648), (328, 60942), (336, 59491), (492, 40628), (574, 34824), (656, 30471), (861, 23216), (984, 20314), (1148, 17412), (1451, 13776), (1722, 11608), (1968, 10157), (2296, 8706), (2902, 6888), (3444, 5804), (4353, 4592)]