21589983

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{15679}}^1$

素因数の和:15708

約数の個数: 20

約数和(自身を含む): 34151040

約数和(自身を除く): 12561057

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 15679, 47037, 141111, 266543, 423333, 799629, 1269999, 2398887, 7196661, 21589983]

約数ペア:

[(1, 21589983), (3, 7196661), (9, 2398887), (17, 1269999), (27, 799629), (51, 423333), (81, 266543), (153, 141111), (459, 47037), (1377, 15679)]