21447822

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{199}}^1$

素因数の和:309

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28318578

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 71, 138, 142, 199, 213, 253, 398, 426, 506, 597, 759, 781, 1194, 1518, 1562, 1633, 2189, 2343, 3266, 4378, 4577, 4686, 4899, 6567, 9154, 9798, 13134, 13731, 14129, 17963, 27462, 28258, 35926, 42387, 50347, 53889, 84774, 100694, 107778, 151041, 155419, 302082, 310838, 324967, 466257, 649934, 932514, 974901, 1949802, 3574637, 7149274, 10723911, 21447822]

約数ペア:

[(1, 21447822), (2, 10723911), (3, 7149274), (6, 3574637), (11, 1949802), (22, 974901), (23, 932514), (33, 649934), (46, 466257), (66, 324967), (69, 310838), (71, 302082), (138, 155419), (142, 151041), (199, 107778), (213, 100694), (253, 84774), (398, 53889), (426, 50347), (506, 42387), (597, 35926), (759, 28258), (781, 27462), (1194, 17963), (1518, 14129), (1562, 13731), (1633, 13134), (2189, 9798), (2343, 9154), (3266, 6567), (4378, 4899), (4577, 4686)]