21561903

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3821}}^1$

素因数の和:3860

約数の個数: 32

約数和(自身を含む): 36691200

約数和(自身を除く): 15129297

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 171, 209, 297, 513, 627, 1881, 3821, 5643, 11463, 34389, 42031, 72599, 103167, 126093, 217797, 378279, 653391, 798589, 1134837, 1960173, 2395767, 7187301, 21561903]

約数ペア:

[(1, 21561903), (3, 7187301), (9, 2395767), (11, 1960173), (19, 1134837), (27, 798589), (33, 653391), (57, 378279), (99, 217797), (171, 126093), (209, 103167), (297, 72599), (513, 42031), (627, 34389), (1881, 11463), (3821, 5643)]