21746655

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1$

素因数の和:197

約数の個数: 96

約数和(自身を含む): 47443968

約数和(自身を除く): 25697313

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 31, 35, 45, 51, 63, 85, 93, 105, 119, 131, 153, 155, 217, 255, 279, 315, 357, 393, 465, 527, 595, 651, 655, 765, 917, 1071, 1085, 1179, 1395, 1581, 1785, 1953, 1965, 2227, 2635, 2751, 3255, 3689, 4061, 4585, 4743, 5355, 5895, 6681, 7905, 8253, 9765, 11067, 11135, 12183, 13755, 15589, 18445, 20043, 20305, 23715, 28427, 33201, 33405, 36549, 41265, 46767, 55335, 60915, 69037, 77945, 85281, 100215, 140301, 142135, 166005, 182745, 207111, 233835, 255843, 345185, 426405, 483259, 621333, 701505, 1035555, 1279215, 1449777, 2416295, 3106665, 4349331, 7248885, 21746655]

約数ペア:

[(1, 21746655), (3, 7248885), (5, 4349331), (7, 3106665), (9, 2416295), (15, 1449777), (17, 1279215), (21, 1035555), (31, 701505), (35, 621333), (45, 483259), (51, 426405), (63, 345185), (85, 255843), (93, 233835), (105, 207111), (119, 182745), (131, 166005), (153, 142135), (155, 140301), (217, 100215), (255, 85281), (279, 77945), (315, 69037), (357, 60915), (393, 55335), (465, 46767), (527, 41265), (595, 36549), (651, 33405), (655, 33201), (765, 28427), (917, 23715), (1071, 20305), (1085, 20043), (1179, 18445), (1395, 15589), (1581, 13755), (1785, 12183), (1953, 11135), (1965, 11067), (2227, 9765), (2635, 8253), (2751, 7905), (3255, 6681), (3689, 5895), (4061, 5355), (4585, 4743)]