21063812

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{68389}}^1$

素因数の和:68411

約数の個数: 24

約数和(自身を含む): 45958080

約数和(自身を除く): 24894268

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 68389, 136778, 273556, 478723, 752279, 957446, 1504558, 1914892, 3009116, 5265953, 10531906, 21063812]

約数ペア:

[(1, 21063812), (2, 10531906), (4, 5265953), (7, 3009116), (11, 1914892), (14, 1504558), (22, 957446), (28, 752279), (44, 478723), (77, 273556), (154, 136778), (308, 68389)]