21000844485

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{15131}}^1$

素因数の和:15320

約数の個数: 80

約数和(自身を含む): 39548995200

約数和(自身を除く): 18548150715

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 149, 207, 345, 405, 447, 621, 745, 1035, 1341, 1863, 2235, 3105, 3427, 4023, 6705, 9315, 10281, 12069, 15131, 17135, 20115, 30843, 45393, 51405, 60345, 75655, 92529, 136179, 154215, 226965, 277587, 348013, 408537, 462645, 680895, 1044039, 1225611, 1387935, 1740065, 2042685, 2254519, 3132117, 5220195, 6128055, 6763557, 9396351, 11272595, 15660585, 20290671, 28189053, 33817785, 46981755, 51853937, 60872013, 101453355, 140945265, 155561811, 182616039, 259269685, 304360065, 466685433, 777809055, 913080195, 1400056299, 2333427165, 4200168897, 7000281495, 21000844485]

約数ペア:

[(1, 21000844485), (3, 7000281495), (5, 4200168897), (9, 2333427165), (15, 1400056299), (23, 913080195), (27, 777809055), (45, 466685433), (69, 304360065), (81, 259269685), (115, 182616039), (135, 155561811), (149, 140945265), (207, 101453355), (345, 60872013), (405, 51853937), (447, 46981755), (621, 33817785), (745, 28189053), (1035, 20290671), (1341, 15660585), (1863, 11272595), (2235, 9396351), (3105, 6763557), (3427, 6128055), (4023, 5220195), (6705, 3132117), (9315, 2254519), (10281, 2042685), (12069, 1740065), (15131, 1387935), (17135, 1225611), (20115, 1044039), (30843, 680895), (45393, 462645), (51405, 408537), (60345, 348013), (75655, 277587), (92529, 226965), (136179, 154215)]