21747429

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{2053}}^1$

素因数の和:2177

約数の個数: 24

約数和(自身を含む): 34605792

約数和(自身を除く): 12858363

約数列:

[1, 3, 9, 11, 33, 99, 107, 321, 963, 1177, 2053, 3531, 6159, 10593, 18477, 22583, 67749, 203247, 219671, 659013, 1977039, 2416381, 7249143, 21747429]

約数ペア:

[(1, 21747429), (3, 7249143), (9, 2416381), (11, 1977039), (33, 659013), (99, 219671), (107, 203247), (321, 67749), (963, 22583), (1177, 18477), (2053, 10593), (3531, 6159)]