128903905

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{1931}}^1$

素因数の和:2041

約数の個数: 24

約数和(自身を含む): 169706880

約数和(自身を除く): 40802975

約数列:

[1, 5, 13, 65, 79, 169, 395, 845, 1027, 1931, 5135, 9655, 13351, 25103, 66755, 125515, 152549, 326339, 762745, 1631695, 1983137, 9915685, 25780781, 128903905]

約数ペア:

[(1, 128903905), (5, 25780781), (13, 9915685), (65, 1983137), (79, 1631695), (169, 762745), (395, 326339), (845, 152549), (1027, 125515), (1931, 66755), (5135, 25103), (9655, 13351)]