680671280

素因数分解:

$2^4\times 5^1\times {\mathrm{8508391}}^1$

素因数の和:8508404

約数の個数: 20

約数和(自身を含む): 1582560912

約数和(自身を除く): 901889632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8508391, 17016782, 34033564, 42541955, 68067128, 85083910, 136134256, 170167820, 340335640, 680671280]

約数ペア:

[(1, 680671280), (2, 340335640), (4, 170167820), (5, 136134256), (8, 85083910), (10, 68067128), (16, 42541955), (20, 34033564), (40, 17016782), (80, 8508391)]