18887572

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{2179}}^1$

素因数の和:2391

約数の個数: 24

約数和(自身を含む): 36257760

約数和(自身を除く): 17370188

約数列:

[1, 2, 4, 11, 22, 44, 197, 394, 788, 2167, 2179, 4334, 4358, 8668, 8716, 23969, 47938, 95876, 429263, 858526, 1717052, 4721893, 9443786, 18887572]

約数ペア:

[(1, 18887572), (2, 9443786), (4, 4721893), (11, 1717052), (22, 858526), (44, 429263), (197, 95876), (394, 47938), (788, 23969), (2167, 8716), (2179, 8668), (4334, 4358)]