78990680

素因数分解:

$2^3\times 5^1\times {\mathrm{1974767}}^1$

素因数の和:1974778

約数の個数: 16

約数和(自身を含む): 177729120

約数和(自身を除く): 98738440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1974767, 3949534, 7899068, 9873835, 15798136, 19747670, 39495340, 78990680]

約数ペア:

[(1, 78990680), (2, 39495340), (4, 19747670), (5, 15798136), (8, 9873835), (10, 7899068), (20, 3949534), (40, 1974767)]