19487727

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1709}}^1$

素因数の和:1903

約数の個数: 24

約数和(自身を含む): 32366880

約数和(自身を除く): 12879153

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 1709, 3801, 5127, 11403, 11963, 15381, 35889, 107667, 309329, 927987, 2165303, 2783961, 6495909, 19487727]

約数ペア:

[(1, 19487727), (3, 6495909), (7, 2783961), (9, 2165303), (21, 927987), (63, 309329), (181, 107667), (543, 35889), (1267, 15381), (1629, 11963), (1709, 11403), (3801, 5127)]