21696268

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{1949}}^1$

素因数の和:1998

約数の個数: 36

約数和(自身を含む): 43570800

約数和(自身を除く): 21874532

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 121, 242, 253, 484, 506, 1012, 1949, 2783, 3898, 5566, 7796, 11132, 21439, 42878, 44827, 85756, 89654, 179308, 235829, 471658, 493097, 943316, 986194, 1972388, 5424067, 10848134, 21696268]

約数ペア:

[(1, 21696268), (2, 10848134), (4, 5424067), (11, 1972388), (22, 986194), (23, 943316), (44, 493097), (46, 471658), (92, 235829), (121, 179308), (242, 89654), (253, 85756), (484, 44827), (506, 42878), (1012, 21439), (1949, 11132), (2783, 7796), (3898, 5566)]