21385185

素因数分解:

$3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{8537}}^1$

素因数の和:8712

約数の個数: 16

約数和(自身を含む): 34425216

約数和(自身を除く): 13040031

約数列:

[1, 3, 5, 15, 167, 501, 835, 2505, 8537, 25611, 42685, 128055, 1425679, 4277037, 7128395, 21385185]

約数ペア:

[(1, 21385185), (3, 7128395), (5, 4277037), (15, 1425679), (167, 128055), (501, 42685), (835, 25611), (2505, 8537)]