18247988

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{641}}^1\times {\mathrm{647}}^1$

素因数の和:1303

約数の個数: 24

約数和(自身を含む): 34945344

約数和(自身を除く): 16697356

約数列:

[1, 2, 4, 11, 22, 44, 641, 647, 1282, 1294, 2564, 2588, 7051, 7117, 14102, 14234, 28204, 28468, 414727, 829454, 1658908, 4561997, 9123994, 18247988]

約数ペア:

[(1, 18247988), (2, 9123994), (4, 4561997), (11, 1658908), (22, 829454), (44, 414727), (641, 28468), (647, 28204), (1282, 14234), (1294, 14102), (2564, 7117), (2588, 7051)]