21170303

素因数分解:

$7^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:244

約数の個数: 32

約数和(自身を含む): 27955200

約数和(自身を除く): 6784897

約数列:

[1, 7, 11, 31, 49, 77, 181, 217, 341, 343, 539, 1267, 1519, 1991, 2387, 3773, 5611, 8869, 10633, 13937, 16709, 39277, 61721, 62083, 97559, 116963, 274939, 432047, 682913, 1924573, 3024329, 21170303]

約数ペア:

[(1, 21170303), (7, 3024329), (11, 1924573), (31, 682913), (49, 432047), (77, 274939), (181, 116963), (217, 97559), (341, 62083), (343, 61721), (539, 39277), (1267, 16709), (1519, 13937), (1991, 10633), (2387, 8869), (3773, 5611)]