80446220

素因数分解:

$2^2\times 5^1\times {\mathrm{691}}^1\times {\mathrm{5821}}^1$

素因数の和:6521

約数の個数: 24

約数和(自身を含む): 169210608

約数和(自身を除く): 88764388

約数列:

[1, 2, 4, 5, 10, 20, 691, 1382, 2764, 3455, 5821, 6910, 11642, 13820, 23284, 29105, 58210, 116420, 4022311, 8044622, 16089244, 20111555, 40223110, 80446220]

約数ペア:

[(1, 80446220), (2, 40223110), (4, 20111555), (5, 16089244), (10, 8044622), (20, 4022311), (691, 116420), (1382, 58210), (2764, 29105), (3455, 23284), (5821, 13820), (6910, 11642)]