21065296

素因数分解:

$2^4\times 7^2\times {\mathrm{97}}^1\times {\mathrm{277}}^1$

素因数の和:396

約数の個数: 60

約数和(自身を含む): 48140148

約数和(自身を除く): 27074852

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 97, 98, 112, 194, 196, 277, 388, 392, 554, 679, 776, 784, 1108, 1358, 1552, 1939, 2216, 2716, 3878, 4432, 4753, 5432, 7756, 9506, 10864, 13573, 15512, 19012, 26869, 27146, 31024, 38024, 53738, 54292, 76048, 107476, 108584, 188083, 214952, 217168, 376166, 429904, 752332, 1316581, 1504664, 2633162, 3009328, 5266324, 10532648, 21065296]

約数ペア:

[(1, 21065296), (2, 10532648), (4, 5266324), (7, 3009328), (8, 2633162), (14, 1504664), (16, 1316581), (28, 752332), (49, 429904), (56, 376166), (97, 217168), (98, 214952), (112, 188083), (194, 108584), (196, 107476), (277, 76048), (388, 54292), (392, 53738), (554, 38024), (679, 31024), (776, 27146), (784, 26869), (1108, 19012), (1358, 15512), (1552, 13573), (1939, 10864), (2216, 9506), (2716, 7756), (3878, 5432), (4432, 4753)]