639496

素因数分解:

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

素因数の和:86

約数の個数: 48

約数和(自身を含む): 1449360

約数和(自身を除く): 809864

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 43, 44, 52, 86, 88, 104, 143, 169, 172, 286, 338, 344, 473, 559, 572, 676, 946, 1118, 1144, 1352, 1859, 1892, 2236, 3718, 3784, 4472, 6149, 7267, 7436, 12298, 14534, 14872, 24596, 29068, 49192, 58136, 79937, 159874, 319748, 639496]

約数ペア:

[(1, 639496), (2, 319748), (4, 159874), (8, 79937), (11, 58136), (13, 49192), (22, 29068), (26, 24596), (43, 14872), (44, 14534), (52, 12298), (86, 7436), (88, 7267), (104, 6149), (143, 4472), (169, 3784), (172, 3718), (286, 2236), (338, 1892), (344, 1859), (473, 1352), (559, 1144), (572, 1118), (676, 946)]