19646991

素因数分解:

$3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:205

約数の個数: 72

約数和(自身を含む): 37346400

約数和(自身を除く): 17699409

約数列:

[1, 3, 7, 9, 13, 21, 23, 39, 49, 63, 69, 91, 117, 147, 149, 161, 207, 273, 299, 441, 447, 483, 637, 819, 897, 1043, 1127, 1341, 1449, 1911, 1937, 2093, 2691, 3129, 3381, 3427, 5733, 5811, 6279, 7301, 9387, 10143, 10281, 13559, 14651, 17433, 18837, 21903, 23989, 30843, 40677, 43953, 44551, 65709, 71967, 94913, 122031, 131859, 133653, 167923, 215901, 284739, 311857, 400959, 503769, 854217, 935571, 1511307, 2182999, 2806713, 6548997, 19646991]

約数ペア:

[(1, 19646991), (3, 6548997), (7, 2806713), (9, 2182999), (13, 1511307), (21, 935571), (23, 854217), (39, 503769), (49, 400959), (63, 311857), (69, 284739), (91, 215901), (117, 167923), (147, 133653), (149, 131859), (161, 122031), (207, 94913), (273, 71967), (299, 65709), (441, 44551), (447, 43953), (483, 40677), (637, 30843), (819, 23989), (897, 21903), (1043, 18837), (1127, 17433), (1341, 14651), (1449, 13559), (1911, 10281), (1937, 10143), (2093, 9387), (2691, 7301), (3129, 6279), (3381, 5811), (3427, 5733)]