21390644

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{919}}^1$

素因数の和:980

約数の個数: 36

約数和(自身を含む): 42735840

約数和(自身を除く): 21345196

約数列:

[1, 2, 4, 11, 22, 23, 44, 46, 92, 253, 506, 529, 919, 1012, 1058, 1838, 2116, 3676, 5819, 10109, 11638, 20218, 21137, 23276, 40436, 42274, 84548, 232507, 465014, 486151, 930028, 972302, 1944604, 5347661, 10695322, 21390644]

約数ペア:

[(1, 21390644), (2, 10695322), (4, 5347661), (11, 1944604), (22, 972302), (23, 930028), (44, 486151), (46, 465014), (92, 232507), (253, 84548), (506, 42274), (529, 40436), (919, 23276), (1012, 21137), (1058, 20218), (1838, 11638), (2116, 10109), (3676, 5819)]