20840787

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1493}}^1$

素因数の和:1560

約数の個数: 32

約数和(自身を含む): 34421760

約数和(自身を除く): 13580973

約数列:

[1, 3, 9, 11, 27, 33, 47, 99, 141, 297, 423, 517, 1269, 1493, 1551, 4479, 4653, 13437, 13959, 16423, 40311, 49269, 70171, 147807, 210513, 443421, 631539, 771881, 1894617, 2315643, 6946929, 20840787]

約数ペア:

[(1, 20840787), (3, 6946929), (9, 2315643), (11, 1894617), (27, 771881), (33, 631539), (47, 443421), (99, 210513), (141, 147807), (297, 70171), (423, 49269), (517, 40311), (1269, 16423), (1493, 13959), (1551, 13437), (4479, 4653)]