20828864

素因数分解:

$2^6\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2447}}^1$

素因数の和:2485

約数の個数: 56

約数和(自身を含む): 49743360

約数和(自身を除く): 28914496

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 64, 76, 112, 133, 152, 224, 266, 304, 448, 532, 608, 1064, 1216, 2128, 2447, 4256, 4894, 8512, 9788, 17129, 19576, 34258, 39152, 46493, 68516, 78304, 92986, 137032, 156608, 185972, 274064, 325451, 371944, 548128, 650902, 743888, 1096256, 1301804, 1487776, 2603608, 2975552, 5207216, 10414432, 20828864]

約数ペア:

[(1, 20828864), (2, 10414432), (4, 5207216), (7, 2975552), (8, 2603608), (14, 1487776), (16, 1301804), (19, 1096256), (28, 743888), (32, 650902), (38, 548128), (56, 371944), (64, 325451), (76, 274064), (112, 185972), (133, 156608), (152, 137032), (224, 92986), (266, 78304), (304, 68516), (448, 46493), (532, 39152), (608, 34258), (1064, 19576), (1216, 17129), (2128, 9788), (2447, 8512), (4256, 4894)]