207967221

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{997}}^1$

素因数の和:1071

約数の個数: 72

約数和(自身を含む): 390465504

約数和(自身を除く): 182498283

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 49, 63, 77, 99, 129, 147, 231, 301, 387, 441, 473, 539, 693, 903, 997, 1419, 1617, 2107, 2709, 2991, 3311, 4257, 4851, 6321, 6979, 8973, 9933, 10967, 18963, 20937, 23177, 29799, 32901, 42871, 48853, 62811, 69531, 76769, 98703, 128613, 146559, 208593, 230307, 300097, 385839, 439677, 471581, 537383, 690921, 900291, 1414743, 1612149, 2100679, 2700873, 3301067, 4244229, 4836447, 6302037, 9903201, 18906111, 23107469, 29709603, 69322407, 207967221]

約数ペア:

[(1, 207967221), (3, 69322407), (7, 29709603), (9, 23107469), (11, 18906111), (21, 9903201), (33, 6302037), (43, 4836447), (49, 4244229), (63, 3301067), (77, 2700873), (99, 2100679), (129, 1612149), (147, 1414743), (231, 900291), (301, 690921), (387, 537383), (441, 471581), (473, 439677), (539, 385839), (693, 300097), (903, 230307), (997, 208593), (1419, 146559), (1617, 128613), (2107, 98703), (2709, 76769), (2991, 69531), (3311, 62811), (4257, 48853), (4851, 42871), (6321, 32901), (6979, 29799), (8973, 23177), (9933, 20937), (10967, 18963)]