21250208

素因数分解:

$2^5\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4993}}^1$

素因数の和:5029

約数の個数: 48

約数和(自身を含む): 50339520

約数和(自身を除く): 29089312

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 56, 76, 112, 133, 152, 224, 266, 304, 532, 608, 1064, 2128, 4256, 4993, 9986, 19972, 34951, 39944, 69902, 79888, 94867, 139804, 159776, 189734, 279608, 379468, 559216, 664069, 758936, 1118432, 1328138, 1517872, 2656276, 3035744, 5312552, 10625104, 21250208]

約数ペア:

[(1, 21250208), (2, 10625104), (4, 5312552), (7, 3035744), (8, 2656276), (14, 1517872), (16, 1328138), (19, 1118432), (28, 758936), (32, 664069), (38, 559216), (56, 379468), (76, 279608), (112, 189734), (133, 159776), (152, 139804), (224, 94867), (266, 79888), (304, 69902), (532, 39944), (608, 34951), (1064, 19972), (2128, 9986), (4256, 4993)]