28508660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{191}}^1\times {\mathrm{439}}^1$

素因数の和:656

約数の個数: 48

約数和(自身を含む): 63866880

約数和(自身を除く): 35358220

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 191, 340, 382, 439, 764, 878, 955, 1756, 1910, 2195, 3247, 3820, 4390, 6494, 7463, 8780, 12988, 14926, 16235, 29852, 32470, 37315, 64940, 74630, 83849, 149260, 167698, 335396, 419245, 838490, 1425433, 1676980, 2850866, 5701732, 7127165, 14254330, 28508660]

約数ペア:

[(1, 28508660), (2, 14254330), (4, 7127165), (5, 5701732), (10, 2850866), (17, 1676980), (20, 1425433), (34, 838490), (68, 419245), (85, 335396), (170, 167698), (191, 149260), (340, 83849), (382, 74630), (439, 64940), (764, 37315), (878, 32470), (955, 29852), (1756, 16235), (1910, 14926), (2195, 12988), (3247, 8780), (3820, 7463), (4390, 6494)]