20289700

素因数分解:

$2^2\times 5^2\times {\mathrm{137}}^1\times {\mathrm{1481}}^1$

素因数の和:1632

約数の個数: 36

約数和(自身を含む): 44379972

約数和(自身を除く): 24090272

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 137, 274, 548, 685, 1370, 1481, 2740, 2962, 3425, 5924, 6850, 7405, 13700, 14810, 29620, 37025, 74050, 148100, 202897, 405794, 811588, 1014485, 2028970, 4057940, 5072425, 10144850, 20289700]

約数ペア:

[(1, 20289700), (2, 10144850), (4, 5072425), (5, 4057940), (10, 2028970), (20, 1014485), (25, 811588), (50, 405794), (100, 202897), (137, 148100), (274, 74050), (548, 37025), (685, 29620), (1370, 14810), (1481, 13700), (2740, 7405), (2962, 6850), (3425, 5924)]