28290520

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{5569}}^1$

素因数の和:5707

約数の個数: 32

約数和(自身を含む): 64166400

約数和(自身を除く): 35875880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 5569, 11138, 22276, 27845, 44552, 55690, 111380, 222760, 707263, 1414526, 2829052, 3536315, 5658104, 7072630, 14145260, 28290520]

約数ペア:

[(1, 28290520), (2, 14145260), (4, 7072630), (5, 5658104), (8, 3536315), (10, 2829052), (20, 1414526), (40, 707263), (127, 222760), (254, 111380), (508, 55690), (635, 44552), (1016, 27845), (1270, 22276), (2540, 11138), (5080, 5569)]