208961905

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{337}}^1$

素因数の和:529

約数の個数: 32

約数和(自身を含む): 271589760

約数和(自身を除く): 62627855

約数列:

[1, 5, 19, 61, 95, 107, 305, 337, 535, 1159, 1685, 2033, 5795, 6403, 6527, 10165, 20557, 32015, 32635, 36059, 102785, 124013, 180295, 390583, 620065, 685121, 1952915, 2199599, 3425605, 10997995, 41792381, 208961905]

約数ペア:

[(1, 208961905), (5, 41792381), (19, 10997995), (61, 3425605), (95, 2199599), (107, 1952915), (305, 685121), (337, 620065), (535, 390583), (1159, 180295), (1685, 124013), (2033, 102785), (5795, 36059), (6403, 32635), (6527, 32015), (10165, 20557)]