28765209

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{109}}^1\times {\mathrm{727}}^1$

素因数の和:861

約数の個数: 24

約数和(自身を含む): 42602560

約数和(自身を除く): 13837351

約数列:

[1, 3, 11, 33, 109, 121, 327, 363, 727, 1199, 2181, 3597, 7997, 13189, 23991, 39567, 79243, 87967, 237729, 263901, 871673, 2615019, 9588403, 28765209]

約数ペア:

[(1, 28765209), (3, 9588403), (11, 2615019), (33, 871673), (109, 263901), (121, 237729), (327, 87967), (363, 79243), (727, 39567), (1199, 23991), (2181, 13189), (3597, 7997)]