8939080

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1123}}^1$

素因数の和:1333

約数の個数: 32

約数和(自身を含む): 20232000

約数和(自身を除く): 11292920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1123, 1592, 1990, 2246, 3980, 4492, 5615, 7960, 8984, 11230, 22460, 44920, 223477, 446954, 893908, 1117385, 1787816, 2234770, 4469540, 8939080]

約数ペア:

[(1, 8939080), (2, 4469540), (4, 2234770), (5, 1787816), (8, 1117385), (10, 893908), (20, 446954), (40, 223477), (199, 44920), (398, 22460), (796, 11230), (995, 8984), (1123, 7960), (1592, 5615), (1990, 4492), (2246, 3980)]