208766380

素因数分解:

$2^2\times 5^1\times {\mathrm{1997}}^1\times {\mathrm{5227}}^1$

素因数の和:7233

約数の個数: 24

約数和(自身を含む): 438712848

約数和(自身を除く): 229946468

約数列:

[1, 2, 4, 5, 10, 20, 1997, 3994, 5227, 7988, 9985, 10454, 19970, 20908, 26135, 39940, 52270, 104540, 10438319, 20876638, 41753276, 52191595, 104383190, 208766380]

約数ペア:

[(1, 208766380), (2, 104383190), (4, 52191595), (5, 41753276), (10, 20876638), (20, 10438319), (1997, 104540), (3994, 52270), (5227, 39940), (7988, 26135), (9985, 20908), (10454, 19970)]