19699404880

素因数分解:

$2^4\times 5^1\times {\mathrm{246242561}}^1$

素因数の和:246242574

約数の個数: 20

約数和(自身を含む): 45801116532

約数和(自身を除く): 26101711652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 246242561, 492485122, 984970244, 1231212805, 1969940488, 2462425610, 3939880976, 4924851220, 9849702440, 19699404880]

約数ペア:

[(1, 19699404880), (2, 9849702440), (4, 4924851220), (5, 3939880976), (8, 2462425610), (10, 1969940488), (16, 1231212805), (20, 984970244), (40, 492485122), (80, 246242561)]