256806914

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1979}}^1$

素因数の和:2055

約数の個数: 64

約数和(自身を含む): 510935040

約数和(自身を除く): 254128126

約数列:

[1, 2, 7, 13, 14, 23, 26, 31, 46, 62, 91, 161, 182, 217, 299, 322, 403, 434, 598, 713, 806, 1426, 1979, 2093, 2821, 3958, 4186, 4991, 5642, 9269, 9982, 13853, 18538, 25727, 27706, 45517, 51454, 61349, 64883, 91034, 122698, 129766, 180089, 318619, 360178, 429443, 591721, 637238, 797537, 858886, 1183442, 1411027, 1595074, 2822054, 4142047, 5582759, 8284094, 9877189, 11165518, 18343351, 19754378, 36686702, 128403457, 256806914]

約数ペア:

[(1, 256806914), (2, 128403457), (7, 36686702), (13, 19754378), (14, 18343351), (23, 11165518), (26, 9877189), (31, 8284094), (46, 5582759), (62, 4142047), (91, 2822054), (161, 1595074), (182, 1411027), (217, 1183442), (299, 858886), (322, 797537), (403, 637238), (434, 591721), (598, 429443), (713, 360178), (806, 318619), (1426, 180089), (1979, 129766), (2093, 122698), (2821, 91034), (3958, 64883), (4186, 61349), (4991, 51454), (5642, 45517), (9269, 27706), (9982, 25727), (13853, 18538)]