1680880

素因数分解:

$2^4\times 5^1\times {\mathrm{21011}}^1$

素因数の和:21024

約数の個数: 20

約数和(自身を含む): 3908232

約数和(自身を除く): 2227352

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21011, 42022, 84044, 105055, 168088, 210110, 336176, 420220, 840440, 1680880]

約数ペア:

[(1, 1680880), (2, 840440), (4, 420220), (5, 336176), (8, 210110), (10, 168088), (16, 105055), (20, 84044), (40, 42022), (80, 21011)]