1257680

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1$

素因数の和:291

約数の個数: 40

約数和(自身を含む): 2976000

約数和(自身を除く): 1718320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 199, 316, 395, 398, 632, 790, 796, 995, 1264, 1580, 1592, 1990, 3160, 3184, 3980, 6320, 7960, 15721, 15920, 31442, 62884, 78605, 125768, 157210, 251536, 314420, 628840, 1257680]

約数ペア:

[(1, 1257680), (2, 628840), (4, 314420), (5, 251536), (8, 157210), (10, 125768), (16, 78605), (20, 62884), (40, 31442), (79, 15920), (80, 15721), (158, 7960), (199, 6320), (316, 3980), (395, 3184), (398, 3160), (632, 1990), (790, 1592), (796, 1580), (995, 1264)]