21100616

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{61339}}^1$

素因数の和:61388

約数の個数: 16

約数和(自身を含む): 40484400

約数和(自身を除く): 19383784

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 61339, 122678, 245356, 490712, 2637577, 5275154, 10550308, 21100616]

約数ペア:

[(1, 21100616), (2, 10550308), (4, 5275154), (8, 2637577), (43, 490712), (86, 245356), (172, 122678), (344, 61339)]