28279287

素因数分解:

$3^4\times {\mathrm{109}}^1\times {\mathrm{3203}}^1$

素因数の和:3324

約数の個数: 20

約数和(自身を含む): 42645240

約数和(自身を除く): 14365953

約数列:

[1, 3, 9, 27, 81, 109, 327, 981, 2943, 3203, 8829, 9609, 28827, 86481, 259443, 349127, 1047381, 3142143, 9426429, 28279287]

約数ペア:

[(1, 28279287), (3, 9426429), (9, 3142143), (27, 1047381), (81, 349127), (109, 259443), (327, 86481), (981, 28827), (2943, 9609), (3203, 8829)]