19947654

素因数分解:

$2^1\times 3^3\times {\mathrm{109}}^1\times {\mathrm{3389}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 44748000

約数和(自身を除く): 24800346

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 109, 218, 327, 654, 981, 1962, 2943, 3389, 5886, 6778, 10167, 20334, 30501, 61002, 91503, 183006, 369401, 738802, 1108203, 2216406, 3324609, 6649218, 9973827, 19947654]

約数ペア:

[(1, 19947654), (2, 9973827), (3, 6649218), (6, 3324609), (9, 2216406), (18, 1108203), (27, 738802), (54, 369401), (109, 183006), (218, 91503), (327, 61002), (654, 30501), (981, 20334), (1962, 10167), (2943, 6778), (3389, 5886)]