21200003

素因数分解:

${\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{1553}}^1$

素因数の和:1654

約数の個数: 16

約数和(自身を含む): 24839136

約数和(自身を除く): 3639133

約数列:

[1, 11, 17, 73, 187, 803, 1241, 1553, 13651, 17083, 26401, 113369, 290411, 1247059, 1927273, 21200003]

約数ペア:

[(1, 21200003), (11, 1927273), (17, 1247059), (73, 290411), (187, 113369), (803, 26401), (1241, 17083), (1553, 13651)]