21156476

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{4957}}^1$

素因数の和:5069

約数の個数: 24

約数和(自身を含む): 40814256

約数和(自身を除く): 19657780

約数列:

[1, 2, 4, 11, 22, 44, 97, 194, 388, 1067, 2134, 4268, 4957, 9914, 19828, 54527, 109054, 218108, 480829, 961658, 1923316, 5289119, 10578238, 21156476]

約数ペア:

[(1, 21156476), (2, 10578238), (4, 5289119), (11, 1923316), (22, 961658), (44, 480829), (97, 218108), (194, 109054), (388, 54527), (1067, 19828), (2134, 9914), (4268, 4957)]