21008768

素因数分解:

$2^7\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:415

約数の個数: 64

約数和(自身を含む): 46854720

約数和(自身を除く): 25845952

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 43, 44, 64, 86, 88, 128, 172, 176, 344, 347, 352, 473, 688, 694, 704, 946, 1376, 1388, 1408, 1892, 2752, 2776, 3784, 3817, 5504, 5552, 7568, 7634, 11104, 14921, 15136, 15268, 22208, 29842, 30272, 30536, 44416, 59684, 60544, 61072, 119368, 122144, 164131, 238736, 244288, 328262, 477472, 488576, 656524, 954944, 1313048, 1909888, 2626096, 5252192, 10504384, 21008768]

約数ペア:

[(1, 21008768), (2, 10504384), (4, 5252192), (8, 2626096), (11, 1909888), (16, 1313048), (22, 954944), (32, 656524), (43, 488576), (44, 477472), (64, 328262), (86, 244288), (88, 238736), (128, 164131), (172, 122144), (176, 119368), (344, 61072), (347, 60544), (352, 59684), (473, 44416), (688, 30536), (694, 30272), (704, 29842), (946, 22208), (1376, 15268), (1388, 15136), (1408, 14921), (1892, 11104), (2752, 7634), (2776, 7568), (3784, 5552), (3817, 5504)]