18987556

素因数分解:

$2^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{6991}}^1$

素因数の和:7099

約数の個数: 24

約数和(自身を含む): 38372096

約数和(自身を除く): 19384540

約数列:

[1, 2, 4, 7, 14, 28, 97, 194, 388, 679, 1358, 2716, 6991, 13982, 27964, 48937, 97874, 195748, 678127, 1356254, 2712508, 4746889, 9493778, 18987556]

約数ペア:

[(1, 18987556), (2, 9493778), (4, 4746889), (7, 2712508), (14, 1356254), (28, 678127), (97, 195748), (194, 97874), (388, 48937), (679, 27964), (1358, 13982), (2716, 6991)]