18986709

素因数分解:

$3^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{5051}}^1$

素因数の和:5240

約数の個数: 16

約数和(自身を含む): 29099520

約数和(自身を除く): 10112811

約数列:

[1, 3, 7, 21, 179, 537, 1253, 3759, 5051, 15153, 35357, 106071, 904129, 2712387, 6328903, 18986709]

約数ペア:

[(1, 18986709), (3, 6328903), (7, 2712387), (21, 904129), (179, 106071), (537, 35357), (1253, 15153), (3759, 5051)]