21042417

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{13567}}^1$

素因数の和:13628

約数の個数: 16

約数和(自身を含む): 31260672

約数和(自身を除く): 10218255

約数列:

[1, 3, 11, 33, 47, 141, 517, 1551, 13567, 40701, 149237, 447711, 637649, 1912947, 7014139, 21042417]

約数ペア:

[(1, 21042417), (3, 7014139), (11, 1912947), (33, 637649), (47, 447711), (141, 149237), (517, 40701), (1551, 13567)]