128538475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{967}}^1$

素因数の和:1399

約数の個数: 24

約数和(自身を含む): 172245920

約数和(自身を除く): 43707445

約数列:

[1, 5, 13, 25, 65, 325, 409, 967, 2045, 4835, 5317, 10225, 12571, 24175, 26585, 62855, 132925, 314275, 395503, 1977515, 5141539, 9887575, 25707695, 128538475]

約数ペア:

[(1, 128538475), (5, 25707695), (13, 9887575), (25, 5141539), (65, 1977515), (325, 395503), (409, 314275), (967, 132925), (2045, 62855), (4835, 26585), (5317, 24175), (10225, 12571)]