1289782975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{281}}^1\times {\mathrm{487}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 1791760320

約数和(自身を除く): 501977345

約数列:

[1, 5, 13, 25, 29, 65, 145, 281, 325, 377, 487, 725, 1405, 1885, 2435, 3653, 6331, 7025, 8149, 9425, 12175, 14123, 18265, 31655, 40745, 70615, 91325, 105937, 136847, 158275, 183599, 203725, 353075, 529685, 684235, 917995, 1779011, 2648425, 3421175, 3968563, 4589975, 8895055, 19842815, 44475275, 51591319, 99214075, 257956595, 1289782975]

約数ペア:

[(1, 1289782975), (5, 257956595), (13, 99214075), (25, 51591319), (29, 44475275), (65, 19842815), (145, 8895055), (281, 4589975), (325, 3968563), (377, 3421175), (487, 2648425), (725, 1779011), (1405, 917995), (1885, 684235), (2435, 529685), (3653, 353075), (6331, 203725), (7025, 183599), (8149, 158275), (9425, 136847), (12175, 105937), (14123, 91325), (18265, 70615), (31655, 40745)]