19215387

素因数分解:

$3^4\times {\mathrm{157}}^1\times {\mathrm{1511}}^1$

素因数の和:1680

約数の個数: 20

約数和(自身を含む): 28906416

約数和(自身を除く): 9691029

約数列:

[1, 3, 9, 27, 81, 157, 471, 1413, 1511, 4239, 4533, 12717, 13599, 40797, 122391, 237227, 711681, 2135043, 6405129, 19215387]

約数ペア:

[(1, 19215387), (3, 6405129), (9, 2135043), (27, 711681), (81, 237227), (157, 122391), (471, 40797), (1413, 13599), (1511, 12717), (4239, 4533)]