1388895820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{281153}}^1$

素因数の和:281194

約数の個数: 48

約数和(自身を含む): 3306371040

約数和(自身を除く): 1917475220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 281153, 562306, 1124612, 1405765, 2811530, 3654989, 5341907, 5623060, 7309978, 10683814, 14619956, 18274945, 21367628, 26709535, 36549890, 53419070, 69444791, 73099780, 106838140, 138889582, 277779164, 347223955, 694447910, 1388895820]

約数ペア:

[(1, 1388895820), (2, 694447910), (4, 347223955), (5, 277779164), (10, 138889582), (13, 106838140), (19, 73099780), (20, 69444791), (26, 53419070), (38, 36549890), (52, 26709535), (65, 21367628), (76, 18274945), (95, 14619956), (130, 10683814), (190, 7309978), (247, 5623060), (260, 5341907), (380, 3654989), (494, 2811530), (988, 1405765), (1235, 1124612), (2470, 562306), (4940, 281153)]