128552080

素因数分解:

$2^4\times 5^1\times {\mathrm{1606901}}^1$

素因数の和:1606914

約数の個数: 20

約数和(自身を含む): 298883772

約数和(自身を除く): 170331692

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1606901, 3213802, 6427604, 8034505, 12855208, 16069010, 25710416, 32138020, 64276040, 128552080]

約数ペア:

[(1, 128552080), (2, 64276040), (4, 32138020), (5, 25710416), (8, 16069010), (10, 12855208), (16, 8034505), (20, 6427604), (40, 3213802), (80, 1606901)]