20256820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{7393}}^1$

素因数の和:7539

約数の個数: 24

約数和(自身を含む): 42855624

約数和(自身を除く): 22598804

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 7393, 14786, 29572, 36965, 73930, 147860, 1012841, 2025682, 4051364, 5064205, 10128410, 20256820]

約数ペア:

[(1, 20256820), (2, 10128410), (4, 5064205), (5, 4051364), (10, 2025682), (20, 1012841), (137, 147860), (274, 73930), (548, 36965), (685, 29572), (1370, 14786), (2740, 7393)]