20216966

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{71}}^1$

素因数の和:177

約数の個数: 48

約数和(自身を含む): 39253248

約数和(自身を除く): 19036282

約数列:

[1, 2, 7, 11, 14, 22, 43, 71, 77, 86, 142, 154, 301, 473, 497, 602, 781, 946, 994, 1562, 1849, 3053, 3311, 3698, 5467, 6106, 6622, 10934, 12943, 20339, 21371, 25886, 33583, 40678, 42742, 67166, 131279, 142373, 235081, 262558, 284746, 470162, 918953, 1444069, 1837906, 2888138, 10108483, 20216966]

約数ペア:

[(1, 20216966), (2, 10108483), (7, 2888138), (11, 1837906), (14, 1444069), (22, 918953), (43, 470162), (71, 284746), (77, 262558), (86, 235081), (142, 142373), (154, 131279), (301, 67166), (473, 42742), (497, 40678), (602, 33583), (781, 25886), (946, 21371), (994, 20339), (1562, 12943), (1849, 10934), (3053, 6622), (3311, 6106), (3698, 5467)]