21121016

素因数分解:

$2^3\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2753}}^1$

素因数の和:2903

約数の個数: 32

約数和(自身を含む): 45606240

約数和(自身を除く): 24485224

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 137, 274, 548, 959, 1096, 1918, 2753, 3836, 5506, 7672, 11012, 19271, 22024, 38542, 77084, 154168, 377161, 754322, 1508644, 2640127, 3017288, 5280254, 10560508, 21121016]

約数ペア:

[(1, 21121016), (2, 10560508), (4, 5280254), (7, 3017288), (8, 2640127), (14, 1508644), (28, 754322), (56, 377161), (137, 154168), (274, 77084), (548, 38542), (959, 22024), (1096, 19271), (1918, 11012), (2753, 7672), (3836, 5506)]