21447272

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{941}}^1$

素因数の和:1002

約数の個数: 64

約数和(自身を含む): 51546240

約数和(自身を除く): 30098968

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 37, 44, 56, 74, 77, 88, 148, 154, 259, 296, 308, 407, 518, 616, 814, 941, 1036, 1628, 1882, 2072, 2849, 3256, 3764, 5698, 6587, 7528, 10351, 11396, 13174, 20702, 22792, 26348, 34817, 41404, 52696, 69634, 72457, 82808, 139268, 144914, 243719, 278536, 289828, 382987, 487438, 579656, 765974, 974876, 1531948, 1949752, 2680909, 3063896, 5361818, 10723636, 21447272]

約数ペア:

[(1, 21447272), (2, 10723636), (4, 5361818), (7, 3063896), (8, 2680909), (11, 1949752), (14, 1531948), (22, 974876), (28, 765974), (37, 579656), (44, 487438), (56, 382987), (74, 289828), (77, 278536), (88, 243719), (148, 144914), (154, 139268), (259, 82808), (296, 72457), (308, 69634), (407, 52696), (518, 41404), (616, 34817), (814, 26348), (941, 22792), (1036, 20702), (1628, 13174), (1882, 11396), (2072, 10351), (2849, 7528), (3256, 6587), (3764, 5698)]