21039986

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{967}}^1$

素因数の和:1046

約数の個数: 32

約数和(自身を含む): 36799488

約数和(自身を除く): 15759502

約数列:

[1, 2, 11, 22, 23, 43, 46, 86, 253, 473, 506, 946, 967, 989, 1934, 1978, 10637, 10879, 21274, 21758, 22241, 41581, 44482, 83162, 244651, 457391, 489302, 914782, 956363, 1912726, 10519993, 21039986]

約数ペア:

[(1, 21039986), (2, 10519993), (11, 1912726), (22, 956363), (23, 914782), (43, 489302), (46, 457391), (86, 244651), (253, 83162), (473, 44482), (506, 41581), (946, 22241), (967, 21758), (989, 21274), (1934, 10879), (1978, 10637)]