81623920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145757}}^1$

素因数の和:145777

約数の個数: 40

約数和(自身を含む): 216887904

約数和(自身を除く): 135263984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145757, 291514, 583028, 728785, 1020299, 1166056, 1457570, 2040598, 2332112, 2915140, 4081196, 5101495, 5830280, 8162392, 10202990, 11660560, 16324784, 20405980, 40811960, 81623920]

約数ペア:

[(1, 81623920), (2, 40811960), (4, 20405980), (5, 16324784), (7, 11660560), (8, 10202990), (10, 8162392), (14, 5830280), (16, 5101495), (20, 4081196), (28, 2915140), (35, 2332112), (40, 2040598), (56, 1457570), (70, 1166056), (80, 1020299), (112, 728785), (140, 583028), (280, 291514), (560, 145757)]