19890286

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{709}}^1$

素因数の和:820

約数の個数: 24

約数和(自身を含む): 32742360

約数和(自身を除く): 12852074

約数列:

[1, 2, 13, 26, 83, 166, 169, 338, 709, 1079, 1418, 2158, 9217, 14027, 18434, 28054, 58847, 117694, 119821, 239642, 765011, 1530022, 9945143, 19890286]

約数ペア:

[(1, 19890286), (2, 9945143), (13, 1530022), (26, 765011), (83, 239642), (166, 119821), (169, 117694), (338, 58847), (709, 28054), (1079, 18434), (1418, 14027), (2158, 9217)]