18001971

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{613}}^1$

素因数の和:883

約数の個数: 24

約数和(自身を含む): 28160496

約数和(自身を除く): 10158525

約数列:

[1, 3, 9, 13, 39, 117, 251, 613, 753, 1839, 2259, 3263, 5517, 7969, 9789, 23907, 29367, 71721, 153863, 461589, 1384767, 2000219, 6000657, 18001971]

約数ペア:

[(1, 18001971), (3, 6000657), (9, 2000219), (13, 1384767), (39, 461589), (117, 153863), (251, 71721), (613, 29367), (753, 23907), (1839, 9789), (2259, 7969), (3263, 5517)]