21289994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{53}}^1$

素因数の和:147

約数の個数: 48

約数和(自身を含む): 38607840

約数和(自身を除く): 17317846

約数列:

[1, 2, 11, 19, 22, 31, 38, 53, 62, 106, 209, 341, 418, 583, 589, 682, 961, 1007, 1166, 1178, 1643, 1922, 2014, 3286, 6479, 10571, 11077, 12958, 18073, 18259, 21142, 22154, 31217, 36146, 36518, 50933, 62434, 101866, 200849, 343387, 401698, 560263, 686774, 967727, 1120526, 1935454, 10644997, 21289994]

約数ペア:

[(1, 21289994), (2, 10644997), (11, 1935454), (19, 1120526), (22, 967727), (31, 686774), (38, 560263), (53, 401698), (62, 343387), (106, 200849), (209, 101866), (341, 62434), (418, 50933), (583, 36518), (589, 36146), (682, 31217), (961, 22154), (1007, 21142), (1166, 18259), (1178, 18073), (1643, 12958), (1922, 11077), (2014, 10571), (3286, 6479)]