21280773

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{1723}}^1$

素因数の和:1928

約数の個数: 16

約数和(自身を含む): 29790720

約数和(自身を除く): 8509947

約数列:

[1, 3, 23, 69, 179, 537, 1723, 4117, 5169, 12351, 39629, 118887, 308417, 925251, 7093591, 21280773]

約数ペア:

[(1, 21280773), (3, 7093591), (23, 925251), (69, 308417), (179, 118887), (537, 39629), (1723, 12351), (4117, 5169)]