21147918

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4513}}^1$

素因数の和:4600

約数の個数: 32

約数和(自身を含む): 46801152

約数和(自身を除く): 25653234

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 71, 142, 213, 426, 781, 1562, 2343, 4513, 4686, 9026, 13539, 27078, 49643, 99286, 148929, 297858, 320423, 640846, 961269, 1922538, 3524653, 7049306, 10573959, 21147918]

約数ペア:

[(1, 21147918), (2, 10573959), (3, 7049306), (6, 3524653), (11, 1922538), (22, 961269), (33, 640846), (66, 320423), (71, 297858), (142, 148929), (213, 99286), (426, 49643), (781, 27078), (1562, 13539), (2343, 9026), (4513, 4686)]