19902806

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{379}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 38814720

約数和(自身を除く): 18911914

約数列:

[1, 2, 7, 11, 14, 22, 31, 62, 77, 121, 154, 217, 242, 341, 379, 434, 682, 758, 847, 1694, 2387, 2653, 3751, 4169, 4774, 5306, 7502, 8338, 11749, 23498, 26257, 29183, 45859, 52514, 58366, 82243, 91718, 129239, 164486, 258478, 321013, 642026, 904673, 1421629, 1809346, 2843258, 9951403, 19902806]

約数ペア:

[(1, 19902806), (2, 9951403), (7, 2843258), (11, 1809346), (14, 1421629), (22, 904673), (31, 642026), (62, 321013), (77, 258478), (121, 164486), (154, 129239), (217, 91718), (242, 82243), (341, 58366), (379, 52514), (434, 45859), (682, 29183), (758, 26257), (847, 23498), (1694, 11749), (2387, 8338), (2653, 7502), (3751, 5306), (4169, 4774)]