21052251

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{971}}^1$

素因数の和:1064

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 13473189

約数列:

[1, 3, 9, 11, 27, 33, 73, 99, 219, 297, 657, 803, 971, 1971, 2409, 2913, 7227, 8739, 10681, 21681, 26217, 32043, 70883, 96129, 212649, 288387, 637947, 779713, 1913841, 2339139, 7017417, 21052251]

約数ペア:

[(1, 21052251), (3, 7017417), (9, 2339139), (11, 1913841), (27, 779713), (33, 637947), (73, 288387), (99, 212649), (219, 96129), (297, 70883), (657, 32043), (803, 26217), (971, 21681), (1971, 10681), (2409, 8739), (2913, 7227)]