20278263

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{1231}}^1$

素因数の和:1287

約数の個数: 24

約数和(自身を含む): 30257920

約数和(自身を除く): 9979657

約数列:

[1, 3, 17, 19, 51, 57, 289, 323, 867, 969, 1231, 3693, 5491, 16473, 20927, 23389, 62781, 70167, 355759, 397613, 1067277, 1192839, 6759421, 20278263]

約数ペア:

[(1, 20278263), (3, 6759421), (17, 1192839), (19, 1067277), (51, 397613), (57, 355759), (289, 70167), (323, 62781), (867, 23389), (969, 20927), (1231, 16473), (3693, 5491)]