129380080

素因数分解:

$2^4\times 5^1\times {\mathrm{1617251}}^1$

素因数の和:1617264

約数の個数: 20

約数和(自身を含む): 300808872

約数和(自身を除く): 171428792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1617251, 3234502, 6469004, 8086255, 12938008, 16172510, 25876016, 32345020, 64690040, 129380080]

約数ペア:

[(1, 129380080), (2, 64690040), (4, 32345020), (5, 25876016), (8, 16172510), (10, 12938008), (16, 8086255), (20, 6469004), (40, 3234502), (80, 1617251)]