25440080

素因数分解:

$2^4\times 5^1\times {\mathrm{318001}}^1$

素因数の和:318014

約数の個数: 20

約数和(自身を含む): 59148372

約数和(自身を除く): 33708292

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 318001, 636002, 1272004, 1590005, 2544008, 3180010, 5088016, 6360020, 12720040, 25440080]

約数ペア:

[(1, 25440080), (2, 12720040), (4, 6360020), (5, 5088016), (8, 3180010), (10, 2544008), (16, 1590005), (20, 1272004), (40, 636002), (80, 318001)]