251991423

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{857}}^1\times {\mathrm{883}}^1$

素因数の和:1783

約数の個数: 24

約数和(自身を含む): 374685168

約数和(自身を除く): 122693745

約数列:

[1, 3, 9, 37, 111, 333, 857, 883, 2571, 2649, 7713, 7947, 31709, 32671, 95127, 98013, 285381, 294039, 756731, 2270193, 6810579, 27999047, 83997141, 251991423]

約数ペア:

[(1, 251991423), (3, 83997141), (9, 27999047), (37, 6810579), (111, 2270193), (333, 756731), (857, 294039), (883, 285381), (2571, 98013), (2649, 95127), (7713, 32671), (7947, 31709)]