19915075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{997}}^1$

素因数の和:1071

約数の個数: 24

約数和(自身を含む): 26730432

約数和(自身を除く): 6815357

約数列:

[1, 5, 17, 25, 47, 85, 235, 425, 799, 997, 1175, 3995, 4985, 16949, 19975, 24925, 46859, 84745, 234295, 423725, 796603, 1171475, 3983015, 19915075]

約数ペア:

[(1, 19915075), (5, 3983015), (17, 1171475), (25, 796603), (47, 423725), (85, 234295), (235, 84745), (425, 46859), (799, 24925), (997, 19975), (1175, 16949), (3995, 4985)]