21189843

素因数分解:

$3^7\times {\mathrm{9689}}^1$

素因数の和:9710

約数の個数: 16

約数和(自身を含む): 31783200

約数和(自身を除く): 10593357

約数列:

[1, 3, 9, 27, 81, 243, 729, 2187, 9689, 29067, 87201, 261603, 784809, 2354427, 7063281, 21189843]

約数ペア:

[(1, 21189843), (3, 7063281), (9, 2354427), (27, 784809), (81, 261603), (243, 87201), (729, 29067), (2187, 9689)]