20637960189

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{671743}}^1$

素因数の和:671790

約数の個数: 48

約数和(自身を含む): 36757831680

約数和(自身を除く): 16119871491

約数列:

[1, 3, 7, 11, 19, 21, 33, 49, 57, 77, 133, 147, 209, 231, 399, 539, 627, 931, 1463, 1617, 2793, 4389, 10241, 30723, 671743, 2015229, 4702201, 7389173, 12763117, 14106603, 22167519, 32915407, 38289351, 51724211, 89341819, 98746221, 140394287, 155172633, 268025457, 362069477, 421182861, 625392733, 982760009, 1086208431, 1876178199, 2948280027, 6879320063, 20637960189]

約数ペア:

[(1, 20637960189), (3, 6879320063), (7, 2948280027), (11, 1876178199), (19, 1086208431), (21, 982760009), (33, 625392733), (49, 421182861), (57, 362069477), (77, 268025457), (133, 155172633), (147, 140394287), (209, 98746221), (231, 89341819), (399, 51724211), (539, 38289351), (627, 32915407), (931, 22167519), (1463, 14106603), (1617, 12763117), (2793, 7389173), (4389, 4702201), (10241, 2015229), (30723, 671743)]