21806855

素因数分解:

$5^1\times 7^1\times {\mathrm{419}}^1\times {\mathrm{1487}}^1$

素因数の和:1918

約数の個数: 16

約数和(自身を含む): 29998080

約数和(自身を除く): 8191225

約数列:

[1, 5, 7, 35, 419, 1487, 2095, 2933, 7435, 10409, 14665, 52045, 623053, 3115265, 4361371, 21806855]

約数ペア:

[(1, 21806855), (5, 4361371), (7, 3115265), (35, 623053), (419, 52045), (1487, 14665), (2095, 10409), (2933, 7435)]