21143349

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{9001}}^1$

素因数の和:9042

約数の個数: 20

約数和(自身を含む): 32677260

約数和(自身を除く): 11533911

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 9001, 27003, 81009, 243027, 261029, 729081, 783087, 2349261, 7047783, 21143349]

約数ペア:

[(1, 21143349), (3, 7047783), (9, 2349261), (27, 783087), (29, 729081), (81, 261029), (87, 243027), (261, 81009), (783, 27003), (2349, 9001)]