21272589

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{1609}}^1$

素因数の和:1741

約数の個数: 24

約数和(自身を含む): 33404280

約数和(自身を除く): 12131691

約数列:

[1, 3, 9, 13, 39, 113, 117, 339, 1017, 1469, 1609, 4407, 4827, 13221, 14481, 20917, 62751, 181817, 188253, 545451, 1636353, 2363621, 7090863, 21272589]

約数ペア:

[(1, 21272589), (3, 7090863), (9, 2363621), (13, 1636353), (39, 545451), (113, 188253), (117, 181817), (339, 62751), (1017, 20917), (1469, 14481), (1609, 13221), (4407, 4827)]