200915720

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{56437}}^1$

素因数の和:56537

約数の個数: 32

約数和(自身を含む): 457147800

約数和(自身を除く): 256232080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 56437, 112874, 225748, 282185, 451496, 564370, 1128740, 2257480, 5022893, 10045786, 20091572, 25114465, 40183144, 50228930, 100457860, 200915720]

約数ペア:

[(1, 200915720), (2, 100457860), (4, 50228930), (5, 40183144), (8, 25114465), (10, 20091572), (20, 10045786), (40, 5022893), (89, 2257480), (178, 1128740), (356, 564370), (445, 451496), (712, 282185), (890, 225748), (1780, 112874), (3560, 56437)]