17887527

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 32440320

約数和(自身を除く): 14552793

約数列:

[1, 3, 7, 9, 21, 27, 31, 43, 63, 71, 93, 129, 189, 213, 217, 279, 301, 387, 497, 639, 651, 837, 903, 1161, 1333, 1491, 1917, 1953, 2201, 2709, 3053, 3999, 4473, 5859, 6603, 8127, 9159, 9331, 11997, 13419, 15407, 19809, 21371, 27477, 27993, 35991, 46221, 59427, 64113, 82431, 83979, 94643, 138663, 192339, 251937, 283929, 415989, 577017, 662501, 851787, 1987503, 2555361, 5962509, 17887527]

約数ペア:

[(1, 17887527), (3, 5962509), (7, 2555361), (9, 1987503), (21, 851787), (27, 662501), (31, 577017), (43, 415989), (63, 283929), (71, 251937), (93, 192339), (129, 138663), (189, 94643), (213, 83979), (217, 82431), (279, 64113), (301, 59427), (387, 46221), (497, 35991), (639, 27993), (651, 27477), (837, 21371), (903, 19809), (1161, 15407), (1333, 13419), (1491, 11997), (1917, 9331), (1953, 9159), (2201, 8127), (2709, 6603), (3053, 5859), (3999, 4473)]