280667080

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1\times {\mathrm{443}}^1$

素因数の和:838

約数の個数: 64

約数和(自身を含む): 648311040

約数和(自身を除く): 367643960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 337, 376, 443, 470, 674, 886, 940, 1348, 1685, 1772, 1880, 2215, 2696, 3370, 3544, 4430, 6740, 8860, 13480, 15839, 17720, 20821, 31678, 41642, 63356, 79195, 83284, 104105, 126712, 149291, 158390, 166568, 208210, 298582, 316780, 416420, 597164, 633560, 746455, 832840, 1194328, 1492910, 2985820, 5971640, 7016677, 14033354, 28066708, 35083385, 56133416, 70166770, 140333540, 280667080]

約数ペア:

[(1, 280667080), (2, 140333540), (4, 70166770), (5, 56133416), (8, 35083385), (10, 28066708), (20, 14033354), (40, 7016677), (47, 5971640), (94, 2985820), (188, 1492910), (235, 1194328), (337, 832840), (376, 746455), (443, 633560), (470, 597164), (674, 416420), (886, 316780), (940, 298582), (1348, 208210), (1685, 166568), (1772, 158390), (1880, 149291), (2215, 126712), (2696, 104105), (3370, 83284), (3544, 79195), (4430, 63356), (6740, 41642), (8860, 31678), (13480, 20821), (15839, 17720)]