28121247

素因数分解:

$3^2\times 7^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:90

約数の個数: 108

約数和(自身を含む): 56766528

約数和(自身を除く): 28645281

約数列:

[1, 3, 7, 9, 11, 17, 21, 31, 33, 49, 51, 63, 77, 93, 99, 119, 121, 147, 153, 187, 217, 231, 279, 341, 357, 363, 441, 527, 539, 561, 651, 693, 833, 847, 1023, 1071, 1089, 1309, 1519, 1581, 1617, 1683, 1953, 2057, 2387, 2499, 2541, 3069, 3689, 3751, 3927, 4557, 4743, 4851, 5797, 5929, 6171, 7161, 7497, 7623, 9163, 11067, 11253, 11781, 13671, 14399, 16709, 17391, 17787, 18513, 21483, 25823, 26257, 27489, 33201, 33759, 40579, 43197, 50127, 52173, 53361, 63767, 77469, 78771, 82467, 100793, 121737, 129591, 150381, 183799, 191301, 232407, 236313, 284053, 302379, 365211, 446369, 551397, 573903, 852159, 907137, 1339107, 1654191, 2556477, 3124583, 4017321, 9373749, 28121247]

約数ペア:

[(1, 28121247), (3, 9373749), (7, 4017321), (9, 3124583), (11, 2556477), (17, 1654191), (21, 1339107), (31, 907137), (33, 852159), (49, 573903), (51, 551397), (63, 446369), (77, 365211), (93, 302379), (99, 284053), (119, 236313), (121, 232407), (147, 191301), (153, 183799), (187, 150381), (217, 129591), (231, 121737), (279, 100793), (341, 82467), (357, 78771), (363, 77469), (441, 63767), (527, 53361), (539, 52173), (561, 50127), (651, 43197), (693, 40579), (833, 33759), (847, 33201), (1023, 27489), (1071, 26257), (1089, 25823), (1309, 21483), (1519, 18513), (1581, 17787), (1617, 17391), (1683, 16709), (1953, 14399), (2057, 13671), (2387, 11781), (2499, 11253), (2541, 11067), (3069, 9163), (3689, 7623), (3751, 7497), (3927, 7161), (4557, 6171), (4743, 5929), (4851, 5797)]