21805185

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{18401}}^1$

素因数の和:18488

約数の個数: 16

約数和(自身を含む): 35331840

約数和(自身を除く): 13526655

約数列:

[1, 3, 5, 15, 79, 237, 395, 1185, 18401, 55203, 92005, 276015, 1453679, 4361037, 7268395, 21805185]

約数ペア:

[(1, 21805185), (3, 7268395), (5, 4361037), (15, 1453679), (79, 276015), (237, 92005), (395, 55203), (1185, 18401)]