81992781

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{1439}}^1$

素因数の和:1945

約数の個数: 24

約数和(自身を含む): 127895040

約数和(自身を除く): 45902259

約数列:

[1, 3, 9, 13, 39, 117, 487, 1439, 1461, 4317, 4383, 6331, 12951, 18707, 18993, 56121, 56979, 168363, 700793, 2102379, 6307137, 9110309, 27330927, 81992781]

約数ペア:

[(1, 81992781), (3, 27330927), (9, 9110309), (13, 6307137), (39, 2102379), (117, 700793), (487, 168363), (1439, 56979), (1461, 56121), (4317, 18993), (4383, 18707), (6331, 12951)]