21171128

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{21871}}^1$

素因数の和:21899

約数の個数: 24

約数和(自身を含む): 43634640

約数和(自身を除く): 22463512

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 484, 968, 21871, 43742, 87484, 174968, 240581, 481162, 962324, 1924648, 2646391, 5292782, 10585564, 21171128]

約数ペア:

[(1, 21171128), (2, 10585564), (4, 5292782), (8, 2646391), (11, 1924648), (22, 962324), (44, 481162), (88, 240581), (121, 174968), (242, 87484), (484, 43742), (968, 21871)]