208917475

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^2\times {\mathrm{103}}^1$

素因数の和:284

約数の個数: 36

約数和(自身を含む): 285304656

約数和(自身を除く): 76387181

約数列:

[1, 5, 13, 25, 65, 79, 103, 325, 395, 515, 1027, 1339, 1975, 2575, 5135, 6241, 6695, 8137, 25675, 31205, 33475, 40685, 81133, 105781, 156025, 203425, 405665, 528905, 642823, 2028325, 2644525, 3214115, 8356699, 16070575, 41783495, 208917475]

約数ペア:

[(1, 208917475), (5, 41783495), (13, 16070575), (25, 8356699), (65, 3214115), (79, 2644525), (103, 2028325), (325, 642823), (395, 528905), (515, 405665), (1027, 203425), (1339, 156025), (1975, 105781), (2575, 81133), (5135, 40685), (6241, 33475), (6695, 31205), (8137, 25675)]