21197792

素因数分解:

$2^5\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1229}}^1$

素因数の和:1264

約数の個数: 72

約数和(自身を含む): 53003160

約数和(自身を除く): 31805368

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 32, 44, 49, 56, 77, 88, 98, 112, 154, 176, 196, 224, 308, 352, 392, 539, 616, 784, 1078, 1229, 1232, 1568, 2156, 2458, 2464, 4312, 4916, 8603, 8624, 9832, 13519, 17206, 17248, 19664, 27038, 34412, 39328, 54076, 60221, 68824, 94633, 108152, 120442, 137648, 189266, 216304, 240884, 275296, 378532, 432608, 481768, 662431, 757064, 963536, 1324862, 1514128, 1927072, 2649724, 3028256, 5299448, 10598896, 21197792]

約数ペア:

[(1, 21197792), (2, 10598896), (4, 5299448), (7, 3028256), (8, 2649724), (11, 1927072), (14, 1514128), (16, 1324862), (22, 963536), (28, 757064), (32, 662431), (44, 481768), (49, 432608), (56, 378532), (77, 275296), (88, 240884), (98, 216304), (112, 189266), (154, 137648), (176, 120442), (196, 108152), (224, 94633), (308, 68824), (352, 60221), (392, 54076), (539, 39328), (616, 34412), (784, 27038), (1078, 19664), (1229, 17248), (1232, 17206), (1568, 13519), (2156, 9832), (2458, 8624), (2464, 8603), (4312, 4916)]