20681136

素因数分解:

$2^4\times 3^3\times 7^2\times {\mathrm{977}}^1$

素因数の和:1008

約数の個数: 120

約数和(自身を含む): 69125040

約数和(自身を除く): 48443904

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 36, 42, 48, 49, 54, 56, 63, 72, 84, 98, 108, 112, 126, 144, 147, 168, 189, 196, 216, 252, 294, 336, 378, 392, 432, 441, 504, 588, 756, 784, 882, 977, 1008, 1176, 1323, 1512, 1764, 1954, 2352, 2646, 2931, 3024, 3528, 3908, 5292, 5862, 6839, 7056, 7816, 8793, 10584, 11724, 13678, 15632, 17586, 20517, 21168, 23448, 26379, 27356, 35172, 41034, 46896, 47873, 52758, 54712, 61551, 70344, 82068, 95746, 105516, 109424, 123102, 140688, 143619, 164136, 184653, 191492, 211032, 246204, 287238, 328272, 369306, 382984, 422064, 430857, 492408, 574476, 738612, 765968, 861714, 984816, 1148952, 1292571, 1477224, 1723428, 2297904, 2585142, 2954448, 3446856, 5170284, 6893712, 10340568, 20681136]

約数ペア:

[(1, 20681136), (2, 10340568), (3, 6893712), (4, 5170284), (6, 3446856), (7, 2954448), (8, 2585142), (9, 2297904), (12, 1723428), (14, 1477224), (16, 1292571), (18, 1148952), (21, 984816), (24, 861714), (27, 765968), (28, 738612), (36, 574476), (42, 492408), (48, 430857), (49, 422064), (54, 382984), (56, 369306), (63, 328272), (72, 287238), (84, 246204), (98, 211032), (108, 191492), (112, 184653), (126, 164136), (144, 143619), (147, 140688), (168, 123102), (189, 109424), (196, 105516), (216, 95746), (252, 82068), (294, 70344), (336, 61551), (378, 54712), (392, 52758), (432, 47873), (441, 46896), (504, 41034), (588, 35172), (756, 27356), (784, 26379), (882, 23448), (977, 21168), (1008, 20517), (1176, 17586), (1323, 15632), (1512, 13678), (1764, 11724), (1954, 10584), (2352, 8793), (2646, 7816), (2931, 7056), (3024, 6839), (3528, 5862), (3908, 5292)]