18732519

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{643}}^1$

素因数の和:748

約数の個数: 32

約数和(自身を含む): 30293760

約数和(自身を除く): 11561241

約数列:

[1, 3, 9, 13, 27, 39, 83, 117, 249, 351, 643, 747, 1079, 1929, 2241, 3237, 5787, 8359, 9711, 17361, 25077, 29133, 53369, 75231, 160107, 225693, 480321, 693797, 1440963, 2081391, 6244173, 18732519]

約数ペア:

[(1, 18732519), (3, 6244173), (9, 2081391), (13, 1440963), (27, 693797), (39, 480321), (83, 225693), (117, 160107), (249, 75231), (351, 53369), (643, 29133), (747, 25077), (1079, 17361), (1929, 9711), (2241, 8359), (3237, 5787)]