19815903

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{3301}}^1$

素因数の和:3359

約数の個数: 24

約数和(自身を含む): 30906720

約数和(自身を除く): 11090817

約数列:

[1, 3, 9, 23, 29, 69, 87, 207, 261, 667, 2001, 3301, 6003, 9903, 29709, 75923, 95729, 227769, 287187, 683307, 861561, 2201767, 6605301, 19815903]

約数ペア:

[(1, 19815903), (3, 6605301), (9, 2201767), (23, 861561), (29, 683307), (69, 287187), (87, 227769), (207, 95729), (261, 75923), (667, 29709), (2001, 9903), (3301, 6003)]