2171691

素因数分解:

$3^8\times {\mathrm{331}}^1$

素因数の和:355

約数の個数: 18

約数和(自身を含む): 3267212

約数和(自身を除く): 1095521

約数列:

[1, 3, 9, 27, 81, 243, 331, 729, 993, 2187, 2979, 6561, 8937, 26811, 80433, 241299, 723897, 2171691]

約数ペア:

[(1, 2171691), (3, 723897), (9, 241299), (27, 80433), (81, 26811), (243, 8937), (331, 6561), (729, 2979), (993, 2187)]