81411568

素因数分解:

$2^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{17729}}^1$

素因数の和:17785

約数の個数: 40

約数和(自身を含む): 184675680

約数和(自身を除く): 103264112

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 41, 56, 82, 112, 164, 287, 328, 574, 656, 1148, 2296, 4592, 17729, 35458, 70916, 124103, 141832, 248206, 283664, 496412, 726889, 992824, 1453778, 1985648, 2907556, 5088223, 5815112, 10176446, 11630224, 20352892, 40705784, 81411568]

約数ペア:

[(1, 81411568), (2, 40705784), (4, 20352892), (7, 11630224), (8, 10176446), (14, 5815112), (16, 5088223), (28, 2907556), (41, 1985648), (56, 1453778), (82, 992824), (112, 726889), (164, 496412), (287, 283664), (328, 248206), (574, 141832), (656, 124103), (1148, 70916), (2296, 35458), (4592, 17729)]