487720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:237

約数の個数: 32

約数和(自身を含む): 1117800

約数和(自身を除く): 630080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 137, 178, 274, 356, 445, 548, 685, 712, 890, 1096, 1370, 1780, 2740, 3560, 5480, 12193, 24386, 48772, 60965, 97544, 121930, 243860, 487720]

約数ペア:

[(1, 487720), (2, 243860), (4, 121930), (5, 97544), (8, 60965), (10, 48772), (20, 24386), (40, 12193), (89, 5480), (137, 3560), (178, 2740), (274, 1780), (356, 1370), (445, 1096), (548, 890), (685, 712)]