18729387

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{2161}}^1$

素因数の和:2280

約数の個数: 20

約数和(自身を含む): 28253016

約数和(自身を除く): 9523629

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 2161, 2889, 6483, 8667, 19449, 58347, 175041, 231227, 693681, 2081043, 6243129, 18729387]

約数ペア:

[(1, 18729387), (3, 6243129), (9, 2081043), (27, 693681), (81, 231227), (107, 175041), (321, 58347), (963, 19449), (2161, 8667), (2889, 6483)]