203440

素因数分解:

$2^4\times 5^1\times {\mathrm{2543}}^1$

素因数の和:2556

約数の個数: 20

約数和(自身を含む): 473184

約数和(自身を除く): 269744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2543, 5086, 10172, 12715, 20344, 25430, 40688, 50860, 101720, 203440]

約数ペア:

[(1, 203440), (2, 101720), (4, 50860), (5, 40688), (8, 25430), (10, 20344), (16, 12715), (20, 10172), (40, 5086), (80, 2543)]