21513459

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{15161}}^1$

素因数の和:15218

約数の個数: 16

約数和(自身を含む): 32022144

約数和(自身を除く): 10508685

約数列:

[1, 3, 11, 33, 43, 129, 473, 1419, 15161, 45483, 166771, 500313, 651923, 1955769, 7171153, 21513459]

約数ペア:

[(1, 21513459), (3, 7171153), (11, 1955769), (33, 651923), (43, 500313), (129, 166771), (473, 45483), (1419, 15161)]