18817239

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47161}}^1$

素因数の和:47190

約数の個数: 16

約数和(自身を含む): 30183680

約数和(自身を除く): 11366441

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 47161, 141483, 330127, 896059, 990381, 2688177, 6272413, 18817239]

約数ペア:

[(1, 18817239), (3, 6272413), (7, 2688177), (19, 990381), (21, 896059), (57, 330127), (133, 141483), (399, 47161)]