21076855

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10781}}^1$

素因数の和:10826

約数の個数: 16

約数和(自身を含む): 27946944

約数和(自身を除く): 6870089

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 10781, 53905, 183277, 247963, 916385, 1239815, 4215371, 21076855]

約数ペア:

[(1, 21076855), (5, 4215371), (17, 1239815), (23, 916385), (85, 247963), (115, 183277), (391, 53905), (1955, 10781)]