21392217

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30869}}^1$

素因数の和:30893

約数の個数: 24

約数和(自身を含む): 38525760

約数和(自身を除く): 17133543

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30869, 92607, 216083, 277821, 339559, 648249, 1018677, 1944747, 2376913, 3056031, 7130739, 21392217]

約数ペア:

[(1, 21392217), (3, 7130739), (7, 3056031), (9, 2376913), (11, 1944747), (21, 1018677), (33, 648249), (63, 339559), (77, 277821), (99, 216083), (231, 92607), (693, 30869)]