21031318

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3691}}^1$

素因数の和:3748

約数の個数: 32

約数和(自身を含む): 40405248

約数和(自身を除く): 19373930

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 154, 259, 407, 518, 814, 2849, 3691, 5698, 7382, 25837, 40601, 51674, 81202, 136567, 273134, 284207, 568414, 955969, 1502237, 1911938, 3004474, 10515659, 21031318]

約数ペア:

[(1, 21031318), (2, 10515659), (7, 3004474), (11, 1911938), (14, 1502237), (22, 955969), (37, 568414), (74, 284207), (77, 273134), (154, 136567), (259, 81202), (407, 51674), (518, 40601), (814, 25837), (2849, 7382), (3691, 5698)]