8270440

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1039}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 18720000

約数和(自身を除く): 10449560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1039, 1592, 1990, 2078, 3980, 4156, 5195, 7960, 8312, 10390, 20780, 41560, 206761, 413522, 827044, 1033805, 1654088, 2067610, 4135220, 8270440]

約数ペア:

[(1, 8270440), (2, 4135220), (4, 2067610), (5, 1654088), (8, 1033805), (10, 827044), (20, 413522), (40, 206761), (199, 41560), (398, 20780), (796, 10390), (995, 8312), (1039, 7960), (1592, 5195), (1990, 4156), (2078, 3980)]