21007998

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{11789}}^1$

素因数の和:11814

約数の個数: 40

約数和(自身を含む): 51357240

約数和(自身を除く): 30349242

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 54, 66, 81, 99, 162, 198, 297, 594, 891, 1782, 11789, 23578, 35367, 70734, 106101, 129679, 212202, 259358, 318303, 389037, 636606, 778074, 954909, 1167111, 1909818, 2334222, 3501333, 7002666, 10503999, 21007998]

約数ペア:

[(1, 21007998), (2, 10503999), (3, 7002666), (6, 3501333), (9, 2334222), (11, 1909818), (18, 1167111), (22, 954909), (27, 778074), (33, 636606), (54, 389037), (66, 318303), (81, 259358), (99, 212202), (162, 129679), (198, 106101), (297, 70734), (594, 35367), (891, 23578), (1782, 11789)]