20709832

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 46791360

約数和(自身を除く): 26081528

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 43, 44, 52, 86, 88, 104, 143, 172, 286, 344, 421, 473, 559, 572, 842, 946, 1118, 1144, 1684, 1892, 2236, 3368, 3784, 4472, 4631, 5473, 6149, 9262, 10946, 12298, 18103, 18524, 21892, 24596, 36206, 37048, 43784, 49192, 60203, 72412, 120406, 144824, 199133, 235339, 240812, 398266, 470678, 481624, 796532, 941356, 1593064, 1882712, 2588729, 5177458, 10354916, 20709832]

約数ペア:

[(1, 20709832), (2, 10354916), (4, 5177458), (8, 2588729), (11, 1882712), (13, 1593064), (22, 941356), (26, 796532), (43, 481624), (44, 470678), (52, 398266), (86, 240812), (88, 235339), (104, 199133), (143, 144824), (172, 120406), (286, 72412), (344, 60203), (421, 49192), (473, 43784), (559, 37048), (572, 36206), (842, 24596), (946, 21892), (1118, 18524), (1144, 18103), (1684, 12298), (1892, 10946), (2236, 9262), (3368, 6149), (3784, 5473), (4472, 4631)]