80451760

素因数分解:

$2^4\times 5^1\times {\mathrm{1005647}}^1$

素因数の和:1005660

約数の個数: 20

約数和(自身を含む): 187050528

約数和(自身を除く): 106598768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1005647, 2011294, 4022588, 5028235, 8045176, 10056470, 16090352, 20112940, 40225880, 80451760]

約数ペア:

[(1, 80451760), (2, 40225880), (4, 20112940), (5, 16090352), (8, 10056470), (10, 8045176), (16, 5028235), (20, 4022588), (40, 2011294), (80, 1005647)]