21898863

素因数分解:

$3^3\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1063}}^1$

素因数の和:1188

約数の個数: 32

約数和(自身を含む): 37452800

約数和(自身を除く): 15553937

約数列:

[1, 3, 7, 9, 21, 27, 63, 109, 189, 327, 763, 981, 1063, 2289, 2943, 3189, 6867, 7441, 9567, 20601, 22323, 28701, 66969, 115867, 200907, 347601, 811069, 1042803, 2433207, 3128409, 7299621, 21898863]

約数ペア:

[(1, 21898863), (3, 7299621), (7, 3128409), (9, 2433207), (21, 1042803), (27, 811069), (63, 347601), (109, 200907), (189, 115867), (327, 66969), (763, 28701), (981, 22323), (1063, 20601), (2289, 9567), (2943, 7441), (3189, 6867)]