80678440

素因数分解:

$2^3\times 5^1\times {\mathrm{1061}}^1\times {\mathrm{1901}}^1$

素因数の和:2973

約数の個数: 32

約数和(自身を含む): 181793160

約数和(自身を除く): 101114720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1061, 1901, 2122, 3802, 4244, 5305, 7604, 8488, 9505, 10610, 15208, 19010, 21220, 38020, 42440, 76040, 2016961, 4033922, 8067844, 10084805, 16135688, 20169610, 40339220, 80678440]

約数ペア:

[(1, 80678440), (2, 40339220), (4, 20169610), (5, 16135688), (8, 10084805), (10, 8067844), (20, 4033922), (40, 2016961), (1061, 76040), (1901, 42440), (2122, 38020), (3802, 21220), (4244, 19010), (5305, 15208), (7604, 10610), (8488, 9505)]