137680

素因数分解:

$2^4\times 5^1\times {\mathrm{1721}}^1$

素因数の和:1734

約数の個数: 20

約数和(自身を含む): 320292

約数和(自身を除く): 182612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1721, 3442, 6884, 8605, 13768, 17210, 27536, 34420, 68840, 137680]

約数ペア:

[(1, 137680), (2, 68840), (4, 34420), (5, 27536), (8, 17210), (10, 13768), (16, 8605), (20, 6884), (40, 3442), (80, 1721)]