21509829

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{217271}}^1$

素因数の和:217288

約数の個数: 12

約数和(自身を含む): 33894432

約数和(自身を除く): 12384603

約数列:

[1, 3, 9, 11, 33, 99, 217271, 651813, 1955439, 2389981, 7169943, 21509829]

約数ペア:

[(1, 21509829), (3, 7169943), (9, 2389981), (11, 1955439), (33, 651813), (99, 217271)]