28908080

素因数分解:

$2^4\times 5^1\times {\mathrm{361351}}^1$

素因数の和:361364

約数の個数: 20

約数和(自身を含む): 67211472

約数和(自身を除く): 38303392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361351, 722702, 1445404, 1806755, 2890808, 3613510, 5781616, 7227020, 14454040, 28908080]

約数ペア:

[(1, 28908080), (2, 14454040), (4, 7227020), (5, 5781616), (8, 3613510), (10, 2890808), (16, 1806755), (20, 1445404), (40, 722702), (80, 361351)]