19621825

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{337}}^1$

素因数の和:501

約数の個数: 24

約数和(自身を含む): 26027352

約数和(自身を除く): 6405527

約数列:

[1, 5, 17, 25, 85, 137, 337, 425, 685, 1685, 2329, 3425, 5729, 8425, 11645, 28645, 46169, 58225, 143225, 230845, 784873, 1154225, 3924365, 19621825]

約数ペア:

[(1, 19621825), (5, 3924365), (17, 1154225), (25, 784873), (85, 230845), (137, 143225), (337, 58225), (425, 46169), (685, 28645), (1685, 11645), (2329, 8425), (3425, 5729)]