21608517

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{25097}}^1$

素因数の和:25148

約数の個数: 16

約数和(自身を含む): 33731712

約数和(自身を除く): 12123195

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 25097, 75291, 175679, 527037, 1028977, 3086931, 7202839, 21608517]

約数ペア:

[(1, 21608517), (3, 7202839), (7, 3086931), (21, 1028977), (41, 527037), (123, 175679), (287, 75291), (861, 25097)]