80390120

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{4663}}^1$

素因数の和:5105

約数の個数: 32

約数和(自身を含む): 181336320

約数和(自身を除く): 100946200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 4663, 8620, 9326, 17240, 18652, 23315, 37304, 46630, 93260, 186520, 2009753, 4019506, 8039012, 10048765, 16078024, 20097530, 40195060, 80390120]

約数ペア:

[(1, 80390120), (2, 40195060), (4, 20097530), (5, 16078024), (8, 10048765), (10, 8039012), (20, 4019506), (40, 2009753), (431, 186520), (862, 93260), (1724, 46630), (2155, 37304), (3448, 23315), (4310, 18652), (4663, 17240), (8620, 9326)]