81043280

素因数分解:

$2^4\times 5^1\times {\mathrm{1013041}}^1$

素因数の和:1013054

約数の個数: 20

約数和(自身を含む): 188425812

約数和(自身を除く): 107382532

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1013041, 2026082, 4052164, 5065205, 8104328, 10130410, 16208656, 20260820, 40521640, 81043280]

約数ペア:

[(1, 81043280), (2, 40521640), (4, 20260820), (5, 16208656), (8, 10130410), (10, 8104328), (16, 5065205), (20, 4052164), (40, 2026082), (80, 1013041)]