20191581

素因数分解:

$3^2\times {\mathrm{73}}^2\times {\mathrm{421}}^1$

素因数の和:573

約数の個数: 18

約数和(自身を含む): 29640858

約数和(自身を除く): 9449277

約数列:

[1, 3, 9, 73, 219, 421, 657, 1263, 3789, 5329, 15987, 30733, 47961, 92199, 276597, 2243509, 6730527, 20191581]

約数ペア:

[(1, 20191581), (3, 6730527), (9, 2243509), (73, 276597), (219, 92199), (421, 47961), (657, 30733), (1263, 15987), (3789, 5329)]