19889667

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{5351}}^1$

素因数の和:5423

約数の個数: 24

約数和(自身を含む): 33396480

約数和(自身を除く): 13506813

約数列:

[1, 3, 7, 9, 21, 59, 63, 177, 413, 531, 1239, 3717, 5351, 16053, 37457, 48159, 112371, 315709, 337113, 947127, 2209963, 2841381, 6629889, 19889667]

約数ペア:

[(1, 19889667), (3, 6629889), (7, 2841381), (9, 2209963), (21, 947127), (59, 337113), (63, 315709), (177, 112371), (413, 48159), (531, 37457), (1239, 16053), (3717, 5351)]