19388859

素因数分解:

$3^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{3217}}^1$

素因数の和:3275

約数の個数: 24

約数和(自身を含む): 30815568

約数和(自身を除く): 11426709

約数列:

[1, 3, 7, 21, 41, 49, 123, 147, 287, 861, 2009, 3217, 6027, 9651, 22519, 67557, 131897, 157633, 395691, 472899, 923279, 2769837, 6462953, 19388859]

約数ペア:

[(1, 19388859), (3, 6462953), (7, 2769837), (21, 923279), (41, 472899), (49, 395691), (123, 157633), (147, 131897), (287, 67557), (861, 22519), (2009, 9651), (3217, 6027)]