19771556

素因数分解:

$2^2\times 7^1\times {\mathrm{191}}^1\times {\mathrm{3697}}^1$

素因数の和:3899

約数の個数: 24

約数和(自身を含む): 39760896

約数和(自身を除く): 19989340

約数列:

[1, 2, 4, 7, 14, 28, 191, 382, 764, 1337, 2674, 3697, 5348, 7394, 14788, 25879, 51758, 103516, 706127, 1412254, 2824508, 4942889, 9885778, 19771556]

約数ペア:

[(1, 19771556), (2, 9885778), (4, 4942889), (7, 2824508), (14, 1412254), (28, 706127), (191, 103516), (382, 51758), (764, 25879), (1337, 14788), (2674, 7394), (3697, 5348)]