21213027

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{97}}^1$

素因数の和:208

約数の個数: 36

約数和(自身を含む): 34505016

約数和(自身を除く): 13291989

約数列:

[1, 3, 9, 11, 33, 47, 97, 99, 141, 291, 423, 517, 873, 1067, 1551, 2209, 3201, 4559, 4653, 6627, 9603, 13677, 19881, 24299, 41031, 50149, 72897, 150447, 214273, 218691, 451341, 642819, 1928457, 2357003, 7071009, 21213027]

約数ペア:

[(1, 21213027), (3, 7071009), (9, 2357003), (11, 1928457), (33, 642819), (47, 451341), (97, 218691), (99, 214273), (141, 150447), (291, 72897), (423, 50149), (517, 41031), (873, 24299), (1067, 19881), (1551, 13677), (2209, 9603), (3201, 6627), (4559, 4653)]