21132815

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{2221}}^1$

素因数の和:2410

約数の個数: 16

約数和(自身を含む): 27837216

約数和(自身を除く): 6704401

約数列:

[1, 5, 11, 55, 173, 865, 1903, 2221, 9515, 11105, 24431, 122155, 384233, 1921165, 4226563, 21132815]

約数ペア:

[(1, 21132815), (5, 4226563), (11, 1921165), (55, 384233), (173, 122155), (865, 24431), (1903, 11105), (2221, 9515)]