21931317

素因数分解:

$3^4\times {\mathrm{73}}^1\times {\mathrm{3709}}^1$

素因数の和:3794

約数の個数: 20

約数和(自身を含む): 33219340

約数和(自身を除く): 11288023

約数列:

[1, 3, 9, 27, 73, 81, 219, 657, 1971, 3709, 5913, 11127, 33381, 100143, 270757, 300429, 812271, 2436813, 7310439, 21931317]

約数ペア:

[(1, 21931317), (3, 7310439), (9, 2436813), (27, 812271), (73, 300429), (81, 270757), (219, 100143), (657, 33381), (1971, 11127), (3709, 5913)]