19947368

素因数分解:

$2^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{3329}}^1$

素因数の和:3449

約数の個数: 32

約数和(自身を含む): 43156800

約数和(自身を除く): 23209432

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 107, 214, 428, 749, 856, 1498, 2996, 3329, 5992, 6658, 13316, 23303, 26632, 46606, 93212, 186424, 356203, 712406, 1424812, 2493421, 2849624, 4986842, 9973684, 19947368]

約数ペア:

[(1, 19947368), (2, 9973684), (4, 4986842), (7, 2849624), (8, 2493421), (14, 1424812), (28, 712406), (56, 356203), (107, 186424), (214, 93212), (428, 46606), (749, 26632), (856, 23303), (1498, 13316), (2996, 6658), (3329, 5992)]