644278325

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{613}}^1\times {\mathrm{2473}}^1$

素因数の和:3113

約数の個数: 24

約数和(自身を含む): 847622088

約数和(自身を除く): 203343763

約数列:

[1, 5, 17, 25, 85, 425, 613, 2473, 3065, 10421, 12365, 15325, 42041, 52105, 61825, 210205, 260525, 1051025, 1515949, 7579745, 25771133, 37898725, 128855665, 644278325]

約数ペア:

[(1, 644278325), (5, 128855665), (17, 37898725), (25, 25771133), (85, 7579745), (425, 1515949), (613, 1051025), (2473, 260525), (3065, 210205), (10421, 61825), (12365, 52105), (15325, 42041)]