21894224

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:336

約数の個数: 60

約数和(自身を含む): 47892768

約数和(自身を除く): 25998544

約数列:

[1, 2, 4, 8, 11, 16, 22, 43, 44, 86, 88, 121, 172, 176, 242, 263, 344, 473, 484, 526, 688, 946, 968, 1052, 1892, 1936, 2104, 2893, 3784, 4208, 5203, 5786, 7568, 10406, 11309, 11572, 20812, 22618, 23144, 31823, 41624, 45236, 46288, 63646, 83248, 90472, 124399, 127292, 180944, 248798, 254584, 497596, 509168, 995192, 1368389, 1990384, 2736778, 5473556, 10947112, 21894224]

約数ペア:

[(1, 21894224), (2, 10947112), (4, 5473556), (8, 2736778), (11, 1990384), (16, 1368389), (22, 995192), (43, 509168), (44, 497596), (86, 254584), (88, 248798), (121, 180944), (172, 127292), (176, 124399), (242, 90472), (263, 83248), (344, 63646), (473, 46288), (484, 45236), (526, 41624), (688, 31823), (946, 23144), (968, 22618), (1052, 20812), (1892, 11572), (1936, 11309), (2104, 10406), (2893, 7568), (3784, 5786), (4208, 5203)]