261498237

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^2$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 492527616

約数和(自身を除く): 231029379

約数列:

[1, 3, 7, 11, 13, 21, 31, 33, 39, 53, 77, 91, 93, 143, 159, 217, 231, 273, 341, 371, 403, 429, 583, 651, 689, 1001, 1023, 1113, 1209, 1643, 1749, 2067, 2387, 2809, 2821, 3003, 4081, 4433, 4823, 4929, 7161, 7579, 8427, 8463, 11501, 12243, 13299, 14469, 18073, 19663, 21359, 22737, 30899, 31031, 34503, 36517, 53053, 54219, 58989, 64077, 87079, 92697, 93093, 109551, 126511, 149513, 159159, 216293, 234949, 255619, 261237, 379533, 401687, 448539, 609553, 648879, 704847, 766857, 957869, 1132027, 1205061, 1644643, 1828659, 2811809, 2873607, 3396081, 4933929, 6705083, 7924189, 8435427, 12452297, 20115249, 23772567, 37356891, 87166079, 261498237]

約数ペア:

[(1, 261498237), (3, 87166079), (7, 37356891), (11, 23772567), (13, 20115249), (21, 12452297), (31, 8435427), (33, 7924189), (39, 6705083), (53, 4933929), (77, 3396081), (91, 2873607), (93, 2811809), (143, 1828659), (159, 1644643), (217, 1205061), (231, 1132027), (273, 957869), (341, 766857), (371, 704847), (403, 648879), (429, 609553), (583, 448539), (651, 401687), (689, 379533), (1001, 261237), (1023, 255619), (1113, 234949), (1209, 216293), (1643, 159159), (1749, 149513), (2067, 126511), (2387, 109551), (2809, 93093), (2821, 92697), (3003, 87079), (4081, 64077), (4433, 58989), (4823, 54219), (4929, 53053), (7161, 36517), (7579, 34503), (8427, 31031), (8463, 30899), (11501, 22737), (12243, 21359), (13299, 19663), (14469, 18073)]