19220733

素因数分解:

$3^4\times 7^1\times {\mathrm{109}}^1\times {\mathrm{311}}^1$

素因数の和:439

約数の個数: 40

約数和(自身を含む): 33221760

約数和(自身を除く): 14001027

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 109, 189, 311, 327, 567, 763, 933, 981, 2177, 2289, 2799, 2943, 6531, 6867, 8397, 8829, 19593, 20601, 25191, 33899, 58779, 61803, 101697, 176337, 237293, 305091, 711879, 915273, 2135637, 2745819, 6406911, 19220733]

約数ペア:

[(1, 19220733), (3, 6406911), (7, 2745819), (9, 2135637), (21, 915273), (27, 711879), (63, 305091), (81, 237293), (109, 176337), (189, 101697), (311, 61803), (327, 58779), (567, 33899), (763, 25191), (933, 20601), (981, 19593), (2177, 8829), (2289, 8397), (2799, 6867), (2943, 6531)]