18990945

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3323}}^1$

素因数の和:3461

約数の個数: 24

約数和(自身を含む): 33186816

約数和(自身を除く): 14195871

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3323, 5715, 9969, 16615, 29907, 49845, 149535, 422021, 1266063, 2110105, 3798189, 6330315, 18990945]

約数ペア:

[(1, 18990945), (3, 6330315), (5, 3798189), (9, 2110105), (15, 1266063), (45, 422021), (127, 149535), (381, 49845), (635, 29907), (1143, 16615), (1905, 9969), (3323, 5715)]