678951639

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{194933}}^1$

素因数の和:194988

約数の個数: 20

約数和(自身を含む): 1037828616

約数和(自身を除く): 358876977

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 194933, 584799, 1754397, 5263191, 8382119, 15789573, 25146357, 75439071, 226317213, 678951639]

約数ペア:

[(1, 678951639), (3, 226317213), (9, 75439071), (27, 25146357), (43, 15789573), (81, 8382119), (129, 5263191), (387, 1754397), (1161, 584799), (3483, 194933)]