2008487920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{282091}}^1$

素因数の和:282193

約数の個数: 40

約数和(自身を含む): 4722220080

約数和(自身を除く): 2713732160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 282091, 564182, 1128364, 1410455, 2256728, 2820910, 4513456, 5641820, 11283640, 22567280, 25106099, 50212198, 100424396, 125530495, 200848792, 251060990, 401697584, 502121980, 1004243960, 2008487920]

約数ペア:

[(1, 2008487920), (2, 1004243960), (4, 502121980), (5, 401697584), (8, 251060990), (10, 200848792), (16, 125530495), (20, 100424396), (40, 50212198), (80, 25106099), (89, 22567280), (178, 11283640), (356, 5641820), (445, 4513456), (712, 2820910), (890, 2256728), (1424, 1410455), (1780, 1128364), (3560, 564182), (7120, 282091)]