19515249

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{431}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 32199552

約数和(自身を除く): 12684303

約数列:

[1, 3, 9, 13, 27, 39, 43, 81, 117, 129, 351, 387, 431, 559, 1053, 1161, 1293, 1677, 3483, 3879, 5031, 5603, 11637, 15093, 16809, 18533, 34911, 45279, 50427, 55599, 151281, 166797, 240929, 453843, 500391, 722787, 1501173, 2168361, 6505083, 19515249]

約数ペア:

[(1, 19515249), (3, 6505083), (9, 2168361), (13, 1501173), (27, 722787), (39, 500391), (43, 453843), (81, 240929), (117, 166797), (129, 151281), (351, 55599), (387, 50427), (431, 45279), (559, 34911), (1053, 18533), (1161, 16809), (1293, 15093), (1677, 11637), (3483, 5603), (3879, 5031)]