51980080

素因数分解:

$2^4\times 5^1\times {\mathrm{649751}}^1$

素因数の和:649764

約数の個数: 20

約数和(自身を含む): 120853872

約数和(自身を除く): 68873792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 649751, 1299502, 2599004, 3248755, 5198008, 6497510, 10396016, 12995020, 25990040, 51980080]

約数ペア:

[(1, 51980080), (2, 25990040), (4, 12995020), (5, 10396016), (8, 6497510), (10, 5198008), (16, 3248755), (20, 2599004), (40, 1299502), (80, 649751)]