21041487

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{449}}^1$

素因数の和:623

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10408113

約数列:

[1, 3, 9, 41, 123, 127, 369, 381, 449, 1143, 1347, 4041, 5207, 15621, 18409, 46863, 55227, 57023, 165681, 171069, 513207, 2337943, 7013829, 21041487]

約数ペア:

[(1, 21041487), (3, 7013829), (9, 2337943), (41, 513207), (123, 171069), (127, 165681), (369, 57023), (381, 55227), (449, 46863), (1143, 18409), (1347, 15621), (4041, 5207)]