21167723521

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1$

素因数の和:494

約数の個数: 64

約数和(自身を含む): 26110328832

約数和(自身を除く): 4942605311

約数列:

[1, 7, 31, 61, 71, 101, 217, 223, 427, 497, 707, 1561, 1891, 2201, 3131, 4331, 6161, 6913, 7171, 13237, 13603, 15407, 15833, 21917, 22523, 30317, 43127, 48391, 50197, 95221, 110831, 134261, 157661, 190991, 222301, 421693, 437431, 490823, 698213, 939827, 965813, 1336937, 1373903, 1556107, 1599133, 2951851, 3062017, 3435761, 4887491, 6760691, 9617321, 11193931, 13560361, 29940203, 42590993, 49573123, 94922527, 97547113, 209581421, 298136951, 347011861, 682829791, 3023960503, 21167723521]

約数ペア:

[(1, 21167723521), (7, 3023960503), (31, 682829791), (61, 347011861), (71, 298136951), (101, 209581421), (217, 97547113), (223, 94922527), (427, 49573123), (497, 42590993), (707, 29940203), (1561, 13560361), (1891, 11193931), (2201, 9617321), (3131, 6760691), (4331, 4887491), (6161, 3435761), (6913, 3062017), (7171, 2951851), (13237, 1599133), (13603, 1556107), (15407, 1373903), (15833, 1336937), (21917, 965813), (22523, 939827), (30317, 698213), (43127, 490823), (48391, 437431), (50197, 421693), (95221, 222301), (110831, 190991), (134261, 157661)]