19937259

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5237}}^1$

素因数の和:5296

約数の個数: 20

約数和(自身を含む): 30422304

約数和(自身を除く): 10485045

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5237, 15711, 47133, 141399, 246139, 424197, 738417, 2215251, 6645753, 19937259]

約数ペア:

[(1, 19937259), (3, 6645753), (9, 2215251), (27, 738417), (47, 424197), (81, 246139), (141, 141399), (423, 47133), (1269, 15711), (3807, 5237)]