21903896

素因数分解:

$2^3\times 7^1\times {\mathrm{181}}^1\times {\mathrm{2161}}^1$

素因数の和:2355

約数の個数: 32

約数和(自身を含む): 47218080

約数和(自身を除く): 25314184

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 181, 362, 724, 1267, 1448, 2161, 2534, 4322, 5068, 8644, 10136, 15127, 17288, 30254, 60508, 121016, 391141, 782282, 1564564, 2737987, 3129128, 5475974, 10951948, 21903896]

約数ペア:

[(1, 21903896), (2, 10951948), (4, 5475974), (7, 3129128), (8, 2737987), (14, 1564564), (28, 782282), (56, 391141), (181, 121016), (362, 60508), (724, 30254), (1267, 17288), (1448, 15127), (2161, 10136), (2534, 8644), (4322, 5068)]