78739280

素因数分解:

$2^4\times 5^1\times {\mathrm{984241}}^1$

素因数の和:984254

約数の個数: 20

約数和(自身を含む): 183069012

約数和(自身を除く): 104329732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 984241, 1968482, 3936964, 4921205, 7873928, 9842410, 15747856, 19684820, 39369640, 78739280]

約数ペア:

[(1, 78739280), (2, 39369640), (4, 19684820), (5, 15747856), (8, 9842410), (10, 7873928), (16, 4921205), (20, 3936964), (40, 1968482), (80, 984241)]