21155343

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1\times {\mathrm{997}}^1$

素因数の和:1654

約数の個数: 16

約数和(自身を含む): 30850176

約数和(自身を除く): 9694833

約数列:

[1, 3, 11, 33, 643, 997, 1929, 2991, 7073, 10967, 21219, 32901, 641071, 1923213, 7051781, 21155343]

約数ペア:

[(1, 21155343), (3, 7051781), (11, 1923213), (33, 641071), (643, 32901), (997, 21219), (1929, 10967), (2991, 7073)]