28560987

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{811}}^1$

素因数の和:880

約数の個数: 48

約数和(自身を含む): 52019968

約数和(自身を除く): 23458981

約数列:

[1, 3, 7, 9, 13, 21, 39, 43, 63, 91, 117, 129, 273, 301, 387, 559, 811, 819, 903, 1677, 2433, 2709, 3913, 5031, 5677, 7299, 10543, 11739, 17031, 31629, 34873, 35217, 51093, 73801, 94887, 104619, 221403, 244111, 313857, 453349, 664209, 732333, 1360047, 2196999, 3173443, 4080141, 9520329, 28560987]

約数ペア:

[(1, 28560987), (3, 9520329), (7, 4080141), (9, 3173443), (13, 2196999), (21, 1360047), (39, 732333), (43, 664209), (63, 453349), (91, 313857), (117, 244111), (129, 221403), (273, 104619), (301, 94887), (387, 73801), (559, 51093), (811, 35217), (819, 34873), (903, 31629), (1677, 17031), (2433, 11739), (2709, 10543), (3913, 7299), (5031, 5677)]