21021868

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{25889}}^1$

素因数の和:25929

約数の個数: 24

約数和(自身を含む): 43495200

約数和(自身を除く): 22473332

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 25889, 51778, 103556, 181223, 362446, 724892, 750781, 1501562, 3003124, 5255467, 10510934, 21021868]

約数ペア:

[(1, 21021868), (2, 10510934), (4, 5255467), (7, 3003124), (14, 1501562), (28, 750781), (29, 724892), (58, 362446), (116, 181223), (203, 103556), (406, 51778), (812, 25889)]