21784818

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{113}}^1\times {\mathrm{127}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 50429952

約数和(自身を除く): 28645134

約数列:

[1, 2, 3, 6, 11, 22, 23, 33, 46, 66, 69, 113, 127, 138, 226, 253, 254, 339, 381, 506, 678, 759, 762, 1243, 1397, 1518, 2486, 2599, 2794, 2921, 3729, 4191, 5198, 5842, 7458, 7797, 8382, 8763, 14351, 15594, 17526, 28589, 28702, 32131, 43053, 57178, 64262, 85767, 86106, 96393, 157861, 171534, 192786, 315722, 330073, 473583, 660146, 947166, 990219, 1980438, 3630803, 7261606, 10892409, 21784818]

約数ペア:

[(1, 21784818), (2, 10892409), (3, 7261606), (6, 3630803), (11, 1980438), (22, 990219), (23, 947166), (33, 660146), (46, 473583), (66, 330073), (69, 315722), (113, 192786), (127, 171534), (138, 157861), (226, 96393), (253, 86106), (254, 85767), (339, 64262), (381, 57178), (506, 43053), (678, 32131), (759, 28702), (762, 28589), (1243, 17526), (1397, 15594), (1518, 14351), (2486, 8763), (2599, 8382), (2794, 7797), (2921, 7458), (3729, 5842), (4191, 5198)]