28940409

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{21017}}^1$

素因数の和:21046

約数の個数: 20

約数和(自身を含む): 45777204

約数和(自身を除く): 16836795

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 21017, 63051, 189153, 357289, 567459, 1071867, 1702377, 3215601, 9646803, 28940409]

約数ペア:

[(1, 28940409), (3, 9646803), (9, 3215601), (17, 1702377), (27, 1071867), (51, 567459), (81, 357289), (153, 189153), (459, 63051), (1377, 21017)]