81684008

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{223}}^1$

素因数の和:478

約数の個数: 64

約数和(自身を含む): 182353920

約数和(自身を除く): 100669912

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 211, 217, 223, 248, 422, 434, 446, 844, 868, 892, 1477, 1561, 1688, 1736, 1784, 2954, 3122, 5908, 6244, 6541, 6913, 11816, 12488, 13082, 13826, 26164, 27652, 45787, 47053, 48391, 52328, 55304, 91574, 94106, 96782, 183148, 188212, 193564, 329371, 366296, 376424, 387128, 658742, 1317484, 1458643, 2634968, 2917286, 5834572, 10210501, 11669144, 20421002, 40842004, 81684008]

約数ペア:

[(1, 81684008), (2, 40842004), (4, 20421002), (7, 11669144), (8, 10210501), (14, 5834572), (28, 2917286), (31, 2634968), (56, 1458643), (62, 1317484), (124, 658742), (211, 387128), (217, 376424), (223, 366296), (248, 329371), (422, 193564), (434, 188212), (446, 183148), (844, 96782), (868, 94106), (892, 91574), (1477, 55304), (1561, 52328), (1688, 48391), (1736, 47053), (1784, 45787), (2954, 27652), (3122, 26164), (5908, 13826), (6244, 13082), (6541, 12488), (6913, 11816)]