20771728

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8269}}^1$

素因数の和:8434

約数の個数: 20

約数和(自身を含む): 40506460

約数和(自身を除く): 19734732

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8269, 16538, 33076, 66152, 132304, 1298233, 2596466, 5192932, 10385864, 20771728]

約数ペア:

[(1, 20771728), (2, 10385864), (4, 5192932), (8, 2596466), (16, 1298233), (157, 132304), (314, 66152), (628, 33076), (1256, 16538), (2512, 8269)]