28542740

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13093}}^1$

素因数の和:13211

約数の個数: 24

約数和(自身を含む): 60494280

約数和(自身を除く): 31951540

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13093, 26186, 52372, 65465, 130930, 261860, 1427137, 2854274, 5708548, 7135685, 14271370, 28542740]

約数ペア:

[(1, 28542740), (2, 14271370), (4, 7135685), (5, 5708548), (10, 2854274), (20, 1427137), (109, 261860), (218, 130930), (436, 65465), (545, 52372), (1090, 26186), (2180, 13093)]