209898458

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:640

約数の個数: 72

約数和(自身を含む): 416287872

約数和(自身を除く): 206389414

約数列:

[1, 2, 7, 11, 14, 22, 31, 49, 62, 77, 98, 121, 154, 217, 242, 341, 434, 539, 571, 682, 847, 1078, 1142, 1519, 1694, 2387, 3038, 3751, 3997, 4774, 5929, 6281, 7502, 7994, 11858, 12562, 16709, 17701, 26257, 27979, 33418, 35402, 43967, 52514, 55958, 69091, 87934, 123907, 138182, 183799, 194711, 247814, 307769, 367598, 389422, 483637, 615538, 867349, 967274, 1362977, 1734698, 2141821, 2725954, 3385459, 4283642, 6770918, 9540839, 14992747, 19081678, 29985494, 104949229, 209898458]

約数ペア:

[(1, 209898458), (2, 104949229), (7, 29985494), (11, 19081678), (14, 14992747), (22, 9540839), (31, 6770918), (49, 4283642), (62, 3385459), (77, 2725954), (98, 2141821), (121, 1734698), (154, 1362977), (217, 967274), (242, 867349), (341, 615538), (434, 483637), (539, 389422), (571, 367598), (682, 307769), (847, 247814), (1078, 194711), (1142, 183799), (1519, 138182), (1694, 123907), (2387, 87934), (3038, 69091), (3751, 55958), (3997, 52514), (4774, 43967), (5929, 35402), (6281, 33418), (7502, 27979), (7994, 26257), (11858, 17701), (12562, 16709)]