21521236

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{83}}^2$

素因数の和:252

約数の個数: 36

約数和(自身を含む): 42172704

約数和(自身を除く): 20651468

約数列:

[1, 2, 4, 11, 22, 44, 71, 83, 142, 166, 284, 332, 781, 913, 1562, 1826, 3124, 3652, 5893, 6889, 11786, 13778, 23572, 27556, 64823, 75779, 129646, 151558, 259292, 303116, 489119, 978238, 1956476, 5380309, 10760618, 21521236]

約数ペア:

[(1, 21521236), (2, 10760618), (4, 5380309), (11, 1956476), (22, 978238), (44, 489119), (71, 303116), (83, 259292), (142, 151558), (166, 129646), (284, 75779), (332, 64823), (781, 27556), (913, 23572), (1562, 13778), (1826, 11786), (3124, 6889), (3652, 5893)]