20907783

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{2153}}^1$

素因数の和:2255

約数の個数: 24

約数和(自身を含む): 32930352

約数和(自身を除く): 12022569

約数列:

[1, 3, 9, 13, 39, 83, 117, 249, 747, 1079, 2153, 3237, 6459, 9711, 19377, 27989, 83967, 178699, 251901, 536097, 1608291, 2323087, 6969261, 20907783]

約数ペア:

[(1, 20907783), (3, 6969261), (9, 2323087), (13, 1608291), (39, 536097), (83, 251901), (117, 178699), (249, 83967), (747, 27989), (1079, 19377), (2153, 9711), (3237, 6459)]